Answer:
force=700N
mass=100kg
acceleration =?
Now,
F=m×a
700=100×a
700÷100=a
7=a
acceleration =7m/s^2 answer!!!
hope this may help you !!!!
A skateboarder rolls horizontally off the top of a staircase and lands at the bottom. The staircase has a horizontal length of 12.0 with a vertical drop of 2.00. We can ignore air resistance.
Answer: 18.8 m/s
Explanation:
A skateboarder rolls horizontally off the top of a staircase and lands at the bottom. The staircase has a horizontal length of 12.0 m with a vertical drop of 2.00 m. We can ignore air resistance.
What is the skater's initial horizontal velocity?
Answer: 18.8 m
How to get the radius from the circumference?
Answer:
The equation Pi = c/2r means that Pi (r) = c/2, so r = c / (2 Pi). The radius of a circle is therefore equal to c / (2 Pi), where c is the circumference of the circle.
Explanation:
15. Sandra decided to talk a walk at her neighborhood park. She walks 20 meters
east, 40 meters west, and finally 50 meters east. What is her total distance
and displacement, respectively?
Answer:
Long question good luck:)..............
Explanation:
a train covers half of its journey with a speed of 20 metre per second and the other of with the speed of 30 metre per second the average speed of the pain during the whole journey is
Answer:
25 meters per second
Explanation:
2 halves so you find the average of the two by adding 20+30=50 then dividing it by number of halves, this is 2.
50/2=25
* 1 po
What are the health benefits of having muscular strength and endurance?
Answer:
i can`t help without showing me the choses
Explanation:
9. According to statistical theory, 68% of your measurements of time should fall within the range of and of therefore about 3 of your 5 measurements should satisfy this condition. How many of your measurements fall within this range? Are your errors random according to this theory?
Answer:
Yes
Explanation:
Yes, this is a random error generating because of statistical constraint. We only have finite number of data points. As per this, if we plot our observation we will get a gaussian (inverse bell ) shaped curve with mean equal to central value.
a 5 kg mass is accelerated at a rate of 2.5 m/s/s. what is the force that is exerted on this object
Answer:
12.5 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 5 × 2.5
We have the final answer as
12.5 NHope this helps you
find the distance traveled in km when the average speed is 60 km per hour and the time taken is 3 and 1/2 hours
Answer:
210 km
Explanation:
60 x 3 1/2 = 210
So I don’t really get it can you also explain what’s the difference between radiation,conduction, and convection?
Answer:
I think its radiation
Explanation:
Conduction is the transfer of heat through solids (A)
Convection is the transfer of heat through liquids or gasses (B)
Radiation is the transfer of heat through em waves (C)
A construction worker accidentally drops a brick from a high scaffold. a. What is the brick's velocity after 4.0 s? b. How far does the brick fall during this time?
Answer:
A. 39.2 m/s
B. 78.4 m
Explanation:
Data obtained from the question include:
Time (t) = 4 s
Acceleration due to gravity (g) = 9.8 m/s²
A. Determination of the brick's velocity.
Time (t) = 4 s
Acceleration due to gravity (g) = 9.8 m/s²
Velocity (v) =?
v = gt
v = 4 × 9.8
v = 39.2 m/s
Thus, the brick's velocity after 4 s is 39.2 m/s
B. Determination of how far the brick fall in 4 s.
Time (t) = 4 s
Acceleration due to gravity (g) = 9.8 m/s²
Height (h) =?
h = ½gt²
h = ½ × 9.8 × 4²
h = 4.9 × 16
h = 78.4 m
Thus, the brick fall 78.4 m during the time.
The velocity after 4 seconds is 40 m/s and the height is 80 m.
From the equations of motion under gravity;
v = u + gt
V = final velocity of the brick
u = initial velocity of the brick
g = acceleration due to gravity = 10 ms-2
t = time taken
Note that, u = 0 m/s because the brick was dropped from a height.
v = 0 + 10(4)
v = 40 m/s
The height is obtained from;
h = ut + 1/2 gt^2
u = 0 m/s because the brick was dropped from a height.
h = 1/2 gt^2
h = 1/2 × 10 × (4)^2
h = 80 m
Learn more: https://brainly.com/question/2375972
At the top of a projectile's path above Earth, the acceleration of an object
Answer: At the top of a projectile's path above earth, the acceleration of an object. Compared to the range of a bullet shot horizontally, a bullet shot at a 30 degree angle.
Explanation: I hope that helped!
What is the density of a piece of metal with a mass of 48g and a volume of 6 cm3
Answer:
A mineral has a volume of 6 mL and a mass of 12g.
Explanation:
Was this right?
I will mark a brainluest, And good ponits, Please help me out
Answer:
gas, liquid and the last one is opaque solid
Explanation:
Answer:
gas, liquid and the last one is opaque solid
Explanation:
If Judy walks 2 blocks north, 5 blocks west, and then 2 blocks south, what is her final
displacement?
Answer: 2 blocks east if i'm not mistaken.
The average mass of a car in the US is 1.440 x 10^6 g. Express this mass in kg.
Answer:
Average mass of acar in the US (in kg) = 1440 kg
Explanation:
Average mass of a car in the US (in g) = 1.440 × 10⁶ g
Mass in kg:
[tex] \rm 1 \: g = {10}^{ - 3} \: kg \\ \\ \rm 1.440 \times 10^6 \ g = 1.440 \times 10^6 \times {10}^{ - 3} \ kg \\ \\ \rm = 1.440 \times 10^{6 - 3} \ kg \\ \\ \rm = 1.440 \times 10^3 \ kg \\ \\ \rm = 1.440 \times 1000 \ kg \\ \\ \rm = 1440 \ kg[/tex]
The specific heat capacity of oxygen is 918 J/kg °C. The specific heat capacity of water is 4181 J/kg °C. Which substance will require more energy to raise its temperature by 1°C?
Oxygen and water
Answer:
Water
Explanation:
Answer:
So, water has a specific heat of exactly 1.00 calorie per gram per °C. Because one calorie is equal to 4.18 J, it takes 4.18 J to raise the temperature of one gram of water by 1°C. In joules, water's specific heat is 4.18 J per gram per °C.
The answer is water.
When you drop a 2 kg iron weight and a 5 kg iron weight from a height, predict which one will fall first to the ground. Justify your answer
helppppp!!!!!!!!!!!!!!!
Answer:
The 5kg iron.
Explanation:
It would be 5Kg iron because it is heavier. Heavier objects fall faster.
When you drop a 2 kg iron weight and a 5 kg iron weight from a height, both will hit the ground at the same time.
What is weight ?"It is the measure of the force of gravity acting on a body. "The formula for weight it is given by: w = mg. As weight is a force its SI unit is also the same as that of force, SI unit of weight is Newton (N).
What is free fall of a body ?"State of a body that moves freely in any manner in the presence of gravity. The planets, for example, are in free-fall in the gravitational field of the Sun. Newton's laws show that a body in free-fall follows an orbit such that the sum of the gravitational and inertial forces equals zero."
Know more about free fall of body here
https://brainly.com/question/13299152
#SPJ2
How to Calculate weight
Answer:
Weight is a measure of the force of gravity pulling down on an object. It depends on the object's mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth. The formula for calculating weight is F = m × 9.8 m/s2, where F is the object's weight in Newtons (N) and m is the object's mass in kilograms.
Explanation:
We do not use water instead of mercury in a barometer.. why.
Answer:
Required Answer:-We don't use water as Water don't expand when it came in connection of temperature.The soprano's singing caused a drinking glass to shatter.
Explain why this happened using what you know about
resonance.
Answer:
The soprano's singing matched the natural frequency of the glass, causing it to vibrate. The strong vibrations caused the glass to shatter.
Explanation:
edg 2020
An automobile travels a displacement of 75 km at 45 degrees north of East. How many kilometers north does it travel?
Answer:
the number of kilometers north it traveled is 53.03 km
Explanation:
The computation of the number of kilometers north it traveled is shown below:
Given that
The Displacement of 75 km
At east north of 45 degrees
Based on the above information, the number of kilometers is
= 75 × cos 45
= 53.03 km
Hence, the number of kilometers north it traveled is 53.03 km
We simply applied the above formula so that the correct value could come
And, the same is to be considered
Usain Bolt ran 100 m in 9.58 s, reaching a final speed of 12.43 m/s. What was his acceleration?
Answer:
1.3m/s²
Explanation:
Given parameters:
Distance = 100m
Time taken = 9.58s
Final speed = 12.43m/s
Unknown:
Acceleration = ?
Solution:
Acceleration is the rate of change of velocity with time; to solve this problem, we apply one of the motion equation;
v = u + at
v is the final speed
u is the initial speed
a is the acceleration
t is the time
u = 0m/s
Insert the parameters and solve;
12.43 = 0 + a x 9.58
12.43 = 9.58a
a = [tex]\frac{12.43}{9.58}[/tex] = 1.3m/s²
I need help plz
Help meh
Answer:
6. False
7. a
8.kinetic
9. ek/n
10.True
Explanation:
Answer:
1. kinetic
2. d
3. b
4. true?
5. true
6. True
7. a
8. kinetic
9. Thermal
10. true
Why the car floated before it started to sink? Explain.
In which of the following instrument is the image that is formed erect
a. Pin hole camera b. Simple camera c. microscope d. periscope
Answer:
C. microscope
Explanation:
A simple microscope is magnifying glass, an ordinary double convex lens having a short focal length that produces virtual and erect image.
Brenda is telling a classmate that we really don’t need to worry about droughts because the supply of water on Earth is constant. Explain to Brenda and her classmate why droughts are a real concern.
Answer:
the reason droughts are a real concern is because even though water is constant doesnt mean its constant everywhere. Rain sometimes cant or wont fall in certain places, to drink sea water you've got to prepare it. even if rain falls heat can cause it to not rain to much or not rain at all.
what was the rule of the sticks on each atom model
Answer:
That they must die
Explanation:
Stick = Die
Your car gets a flat! You go from 90 kilometers per hour to a stop in 6 seconds. What is your rate of deceleration? (it's negative!)
I need this ASAP!
Answer:
-15?
Explanation:
A motorcyclist drives around a bend with a 20 m radius, with a constant velocity of 3 m/s. The motorcyclist and the motorcycle have a combined mass of 50 kg. What is the motorcyclist’s centripetal acceleration?
Answer:
[tex]a=0.45\ m/s^2[/tex]
Explanation:
Given that,
The radius of a bend, r = 20 m
Velocity of motorcyclist, v = 3 m/s
The combined mass of motorcyclist and the motorcycle is 50 kg
We need to find the motorcyclist’s centripetal acceleration. The formula used to find the centripetal acceleration is given by :
[tex]a=\dfrac{v^2}{r}\\\\a=\dfrac{(3)^2}{20}\\\\a=0.45\ m/s^2[/tex]
So, the acceleration of the motorcyclist is [tex]0.45\ m/s^2[/tex].
what are insulators of electricity
Answer:
Rubber
Glass
Pure water
Oil
Air
Diamond
Dry wood
Dry cotton
Plastic
Asphalt
Other strong insulators include:
Fiberglass
Dry paper
Porcelain
Ceramics
Quartz
Explanation:
I hope this helps