a. how fast something does work

b. how much force something can apply

c. how strong something is

d. how much work something can do

**Answer:**

The answer is A

**Explanation:**

**Answer:**

A. How fast something works.

**Explanation:**

Power in physics is the rate at which work is done.

What net force is needed to increase the velocity of a 5 kg object by 3 m/s over the course of 2.5 seconds?

Hi there!

Recall Newton's Second Law:

[tex]\large\boxed{\Sigma F = ma}[/tex]

∑F = net force (N)

m = mass (kg)

a = acceleration (m/s²)

We must begin by solving for the acceleration using the following:

a = Δv/t

In this instance:

Δv = 3 m/s

t = 2.5 sec

a = 3/2.5 = 1.2 m/s²

Now, plug this value along with the mass into the equation for net force:

[tex]\Sigma F = 5(1.2) = \boxed{6 N}}[/tex]

**Answer:**

[tex]\boxed {\boxed {\sf 6 \ Newtons}}[/tex]

**Explanation:**

According to Newton's Second Law of Motion, force is the product of mass and acceleration. The mass of the object is 5 kilograms, but the acceleration is unknown.

We can find acceleration using the following formula:

[tex]a= \frac{ \Delta v}{t}[/tex]

The velocity of the object increases by 3 meters per second. It accelerates in 2.5 seconds.

Δv= 3 m/s t= 2.5 sSubstitute the values into the formula.

[tex]a= \frac{3 \ m/s}{2.5 \ s}[/tex]

[tex]a= 1.2 \ m/s/s = 1.2 \ m/s^2[/tex]

Now we know the mass and acceleration.

m= 5 kg a= 1.2 m/s²Substitute the values into the force formula.

[tex]F=ma[/tex]

[tex]F= (5 \ kg)(1.2 \ m/s^2)[/tex]

[tex]F= 6 \ kg*m/s^2[/tex]

Convert the units. 1 kilogram meter per second squared is equal to 1 Newton. Our answer of 6 kilogram meters per second squared is equal to 6 Newtons.

[tex]F= 6 \ N[/tex]

Consider a car of mass m moving with an initial speed Vo on a straight, flat road. At time t=0, the driver fully applies the breaks to avoid colliding with debris in the road in front of the car. The car’s wheels lock, causing the car to slide on the roadway until the car stops, before running over the debris. The distance that the car slides is D. The coefficient of kinetic friction between the car’s tires and the roadway is a constant value of Uk.

A) Sketch a free body diagram for the car sliding to rest and write Fnet equations

A) does the value D increase or decrease with increasing initial speed?

B) does the value D increase or decrease with increasing the coefficient of friction?

C) derive an equation for the acceleration of the car in terms of Uk and physical consonants

the answer is B :)))

3. Which is not an example of energy

(5 Points)

light

thermal

heat

chemical

**Answer:**

**Heat, Chemical**

**Answer:**

heat is not an energy is a process.

**Explanation:**

A 2-kg object is pulled to the left with a force of 30 N and to the right with a force of 9 N. What is the acceleration of the object?

An object that weighs 75 N is pulled horizontally to the right with a force of 50 N. The force of friction on this object is 30 N to the left. What is the acceleration of the object?

The force on the object is 50 N to the right and 30 N to the left.

⇒ The net force on the object is, =50−30=20 N to the right.

The weight of the object is, =75 N.

⇒ The mass of the object is ==759.8 kg.

⇒ The acceleration of the object is ==20759.8=2.613 m/s 2.

The **acceleration **of the object is 10 [tex]m/s^2[/tex].

**Acceleration **is defined as the rate of change of velocity of an object with respect to time which are **vector quantities **i.e. both magnitude and direction. The **orientation **of an object's acceleration is given by the orientation of the net force acting on that object.

It can be expressed as:

**a= v/t**

where, a is the acceleration

v is the velocity

t is the time taken

It can also be expressed as** F=ma**

where, F= force applied

m= mass of the object

So, for above given information

The force on the object is **9N **to the right and **30N **to the left. The net force on the object is **21N **to the left

The mass of the object is 2kg

So, a= 21N/ 2 kg = 10.5 [tex]m/s^2[/tex]

Thus, the **acceleration **of the object is 10 [tex]m/s^2[/tex].

Learn more about **Acceleration**, here:

https://brainly.com/question/12550364

#SPJ2

Hi, please help! •_•

One workman is measured as having a power of 528W. His weight is 800N. He can develop the same power climbing a ladder, whose rungs are 30cm apart. How many rungs can he climb in 5s?

**Answer:**

He can climb 11 rungs

**Explanation:**

Power = 528W, Force = 800N, Time= 5s Total Distance moved = 30x cm or 0.3x m, where x is the number of rungs he climbed

Power = Work done/time

Work done = Power × time

= 528 × 5

= 2640Joules

Also Work done = Force × total distance moved

Total Distance moved = Work done/force

0.3x = 2640/800

0.3x = 33

x = 3.3/0.3

x = 11

will mark brainliest if answer

I won't touch the object because there is a warning sign and that means you stay out if it because it is a danger sign that High Resistance Material that means it is dangerous.

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.2 106 m/s.

Find the central force acting on the electron as it revolves in a circular orbit of radius 4.63 x 10-11 m.

Answer in units of N.

The **central force **acting on the **electron **as it revolves in a** circular orbit **is [tex]9.52 \times 10^{-8} \ N[/tex].

The given parameters;

The **central force **acting on the **electron **as it revolves in a** circular orbit **is calculated as follows;

[tex]F = \frac{M_e v^2}{r} \\\\[/tex]

where;

[tex]M_e[/tex] is mass of electron = 9.11 x 10⁻³¹ kg

[tex]F = \frac{(9.11 \times 10^{-31}) \times(2.2\times 10^6)^2 }{4.63 \times 10^{-11}} \\\\F = 9.52 \times 10^{-8} \ N[/tex]

Thus, the **central force **acting on the **electron **as it revolves in a** circular orbit **is [tex]9.52 \times 10^{-8} \ N[/tex].

Learn more about centripetal force here:https://brainly.com/question/20905151

what is the purpose of the thermal energy tranfer lab

**Answer:thermal Energy Transfer in Mixtures Purpose: The purpose of this experiment is to discover how exactly the final temperature of a mixture, involving a substance and hot water, is affected and impacted by the type of substance used. This means that when hot water is mixed with another substance, it must be determined**

**Explanation:**

did this on edge

What two things related to sedimentary rocks do you see at the Grand Canyon ?

**Answer: **

sandstone and mudstone

**Explanation:**

Help me pls both answers i’ll give brainly

Do u know the formula

A weightlifter lifts a 350 N set of weights over his head a vertical distance of 2.5 meters above the floor. Calculate the work the athlete does on the weights, assuming he lifts them at a constant speed.

A. 525 J

B. 750 J

C. 1005 J

D. 700 N•m

E. 875 J

Answer: D) 700 N•m

Answer: Took that test already

Answer: Took that test already

The answer is E! I use a calculator and I did 350 divided by 2.5 and the answer was 875!!

The relationship between Acceleration and Mass is described as:

O a. Equal

O b. Directly Proportional

O c. Inversely Proportional

O d. Opposite

O e. None of these

**Explanation:**

According to Newton's second law

[tex]\\ \sf{:}\dashrightarrow Force=Mass\times Acceleration [/tex]

[tex]\\ \sf{:}\dashrightarrow Mass=\dfrac{Force}{Acceleration}[/tex]

[tex]\\ \sf{:}\dashrightarrow Mass\propto \dfrac{1}{Acceleration}[/tex]

Option C

You roll a toy car, and it moves 10 meters in five seconds. What is the car's velocity?

Displacement = 10 mTime = 5 sWe know,[tex]velocity \: \: = \frac{displacement}{time} \\ [/tex]Therefore, the car's velocity[tex] = \frac{10}{5} m/s \\ = 2m/s[/tex]Answer:

The car's velocity is 2 m/s.

Hope you could get an idea from here.

Doubt clarification - use comment section.

The force of gravity can also be referred to as the force of _____________.

**Answer:**

Gravitational.

**Explanation:**

In Earth, everything have a volume and mass, or downward force of gravity, which Earth's mass exerts on them.

The mass of a water skier is 54 kg. Calculate his/her weight if the gravitational field strength is 10 N/kg.

**Answer:**

weight=mass×gravity

the mass in this question is 54kg and the gravity is 10

therefore:

w=54×10

=540N

I hope this helps

What would be the difference in your welght if you were four times farther from the center of Earth than you are now?

you would die.

the core of the earth is as hot as the sun surface so you would be dead

A projectile is to be launched at an angle of 30° so that it falls beyond the pond of length 20 meters as shown in the figure.

a) What is the range of values of the initial velocity so that the projectile falls between points M and N?

**Answer: A**

**Explanation:**

I want my points so yea

if clarisses mass on earth is 52kg what would be her weight on venus if the acceleration due to gravity on that planet is 8.87 m/s^2

Answer:

Weight=F=MA=52*8.87=461.24

Does the coefficient of kinetic friction depend on the speed?

**Answer:**

yes because if the speed/K.E. of body increases the friction will also apply more instantly

what was stored when you bent the ruler in your left hand?

**Answer:**

potential energy

the name comes from the fact that the ruler has "potential" to act

**Explanation:**

**Explanation:**

The deformation of the ruler creates a force in the opposite direction, known as a restoring force.

I'm not sure if it's correct...

The deceleration of the dummy is less than the deceleration of the passenger compartment.

Explain why this is of benefit for the safety of a passenger.

Based on the information given, this is beneficial because the **passenger** is less likely to be** injured.**

**Deceleration** simply means acceleration in a reverse way. **Deceleration **simply means the rate at which an object slows down.

From the complete information, it should be noted that the fact that the **deceleration** of the** dummy** is less than the **deceleration** of the passenger **compartment **is beneficial as it impacts on passenger or dummy less than without the airbag or **seat belt.**

Therefore, this is important as the** passenger** is less likely to be injured.

Learn about **deceleration** on:

https://brainly.com/question/75351

1. Taking accurate measurements of small values using the ‘measure many and average’ method.

Each oscillation takes a small amount of time, and your reaction time is about 0.1 seconds. This means too much of the time you measure is your reaction time. Find out the percentage error with this calculation;

a. ((reaction time)⁄(time for one oscillation))x100=% error

b. To reduce the percentage error, time for ten oscillations.

c. Take the average time by dividing your answer by ten.

d. Your reaction time is still the same, 0.1 s. Find out the new percentage error with this calculation;

**Answer:**

i need free answers here

**Explanation:**

A new moon is discovered orbiting Neptune with an orbital speed of 9.3 x103 m/s. Neptune's mass is 1.0 x1026 kg. A) What is the radius of the new moon's orbit? B) What is the orbital period? Assume that the orbit is circular. (G = 6.673 x10-11 N-m²/kg?

The radius of the new moons orbit is R= 7.715 x 10^7 m

The orbital period of the moon is T= 14.48 hr

The orbital period of the moon is T= 14.48 hr

a)iii) as the wheelbarrow was being pushed, the tyre went over a small stone. Describe and explain how the pressure changes.

**Answer:**

it changed because the rock put the pressure all in one spot.

**Explanation:**

2 questions, 100 points

Gravitational force between objects ____________ as objects move farther apart, and it is ___________ between objects that are closer together.

increases, weaker

increases, stronger

decreases, weaker

decreases, stronger

In science, weight is measure in

Pounds

Kelvin

Newtons

Liters

1. Is decreases, stronger

2. Pounds

2. Pounds

**Answer:**

decreases, stronger

newtons

**Explanation:**

a 25 kg crate is pushed horizontally with a force of 70N. if the coefficient of friction is .20, calculate the acceleration of the crate.

From **Newton's second law of motion**, the **acceleration** of the crate is **0.84m/**[tex]s^{2}[/tex]

Given that a 25 kg crate is pushed horizontally with a force of 70N and the coefficient of friction is 0.20

To calculate the **acceleration** of the crate, We will consider the** net force **acting on the crate. The net force will be sum of the **applied force** F and the **frictional force **[tex]F_{r}[/tex].

Let us first calculate the **frictional force** [tex]F_{r}[/tex]. That is,

[tex]F_{r}[/tex] =- μN

[tex]F_{r}[/tex] = μmg

[tex]F_{r}[/tex] = 0.2 x 25 x 9.8

[tex]F_{r}[/tex] = 49N

Using **Newton's second law**,

F = ma

F - [tex]F_{r}[/tex] = ma

70 - 49 = 25 a

21 = 25a

a = 21 / 25

a = 0.84 m/[tex]s^{2}[/tex]

Therefore, the **acceleration** of the crate is **0.84m/**[tex]s^{2}[/tex]

Learn more here: https://brainly.com/question/1141170

Physicists call any change in energy an impulse true or false?

False

.!.7:&//‘is sis sis did is

.!.7:&//‘is sis sis did is

the image in figure 16.36 combines observations made with visible light and radio telescopes. which color in the image represents the radio emission?

Answer: pinkish- white

Purple

Explanation:

write of the following does not represent electrical power in a circuit ?

(a) I²R

(b) IR²

(c)VI

(d) V²/R

(b) IR^2 does not represent electrical power in a circuit.

The equations for electrical power are as follows:

P=I^2R

P=VI

P=V^2/R

(You can get this equation by rearranging V=IR, making I the subject to get I=V/R and substituting that into P=VI)

P=E/T

The equations for electrical power are as follows:

P=I^2R

P=VI

P=V^2/R

(You can get this equation by rearranging V=IR, making I the subject to get I=V/R and substituting that into P=VI)

P=E/T

Convert 8 m/s to miles per hour

**Answer:**

17.8954903 or 17.9 mph

**Explanation:**

m/s is meters per second. 1609.344 meters is one mile. There are 3,600 seconds in an hour. 8 meters *3600 seconds= 28,800. 28,800/1609.344 = 17.8954903. Simplify to 17.9

a0 can cause weakness or numbness on one side of the body.
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