A stone is catapulted at time t = 0, with an initial velocity of magnitude 21.0 m/s and at an angle of 47.0° above the horizontal. (Neglect air resistance.) Find its horizontal and vertical displacements from the catapult site at the following times after launch.
(a) 0.90 s
m (horizontal)
m (vertical)

(b) 1.50 s
m (horizontal)
m (vertical)

(c) 3.14 s
m (horizontal)
m (vertical)

Answers

Answer 1

Answer:

Explanation:

6utytytyt


Related Questions

CAN SOMEONE HELP ME WITH THIS QUESTION!!

Answers

Answer:

The one you have selected

Explanation:

That is right

What is the difference between the geographic North Pole and the magnetic north pole?​

Answers

Answer:

Magnetic north is the direction towards the north magnetic pole, which is a wandering point where the Earth's magnetic field goes vertically down into the planet

Explanation:

I searched it up lol

The force of air particles over an area is ________

temperature.
pressure.
volume.
kelvins.

Answers

The answer is Pressure.

A 20 kg crate initially at rest on a horizontal floor requires a 80 N horizontal force to set it in motion. Find the coefficient of static friction between the crate and the floor.​

Answers

Answer:

The coefficient of static friction between the crate and the floor is 0.41

Explanation:

Friction Force

When an object is moving and encounters friction in the air or rough surfaces, it loses acceleration and velocity because the friction force opposes motion.

The friction force when an object is moving on a horizontal surface is calculated by:

[tex]Fr=\mu N[/tex]          [1]

Where [tex]\mu[/tex] is the coefficient of static or kinetics friction and N is the normal force.

If no forces other then the weight and the normal are acting upon the y-direction, then the weight and the normal are equal in magnitude:

N = W = m.g

The crate of m=20 Kg has a weight of:

W = 20*9.8

W = 196 N

The normal force is also N=196 N

We can find the coefficient of static friction by solving [1] for [tex]\mu[/tex]:

[tex]\displaystyle \mu=\frac{Fr}{N}[/tex]

The friction force is equal to the minimum force required to start moving the object on the floor, thus Fr=80 N and:

[tex]\displaystyle \mu=\frac{80}{196}[/tex]

[tex]\mu=0.41[/tex]

The coefficient of static friction between the crate and the floor is 0.41

EZ POINTS
20. An object's kinetic energy is a combination of its: A. mass and weight B. distance and direction C. mass and velocity D. volume and direction​

Answers

Answer:

A.

Explanation:

B,C,D is not right because those do not pay a factor on kinectic energy

Guys i need help please

Answers

Answer:

I'm pretty sure the answer is around 9.2 seconds

Explanation:

Calculate the force used if 108J of work done is moving a wrapped present 9M

Answers

Answer:

F = 12 N

Explanation:

Mechanical Work

Mechanical work is the amount of energy transferred by a force. It's a scalar quantity, with SI units of joules.

Being F the force vector and s the displacement vector, the work is calculated as:

W = F.s

If both the force and displacement are parallel, then we can use the equivalent scalar formula:

W=F.s

When the value of the work is known and we need to find the force, we solve the above equation for F:

[tex]\displaystyle F=\frac{W}{s}[/tex]

The wrapping present is moved by s=9 m doing W=108 J of work. The force used is:

[tex]\displaystyle F=\frac{108}{9}[/tex]

F = 12 N

Convert 60000cm to m ​

Answers

Answer:

The answer is 600 using metric system

Answer:

600 cm

Explanation:

60,000 ÷100=600

What does the REVOLUTION of Earth around the Sun bring us and how long does it take?

Answers

Answer:

takes 365 days and it bring us seasons such as, spring,winter and fall.

Why do temperatures differ between air, land, and water?

Answers

Answer:the ocean water isn't moving into or through the atmosphere as a result of the sun's heating of the water, convection isn't the process influencing air and water temperature difference. The heat of the ocean is being given off radiated into the air, making the air substantially warmer

Explanation:

A bicyclist with a mass of 50 kg is traveling at a rate of 30 m/s. It accelerates to a rate of 50 m/s in 5 seconds. What is the net force acting on the bicycle?

Answers

Answer:

200 N

Explanation:

There is only two needed factors in play here; the mass and acceleration

According to Newton's 2nd Law: F = m*a

Now Acceleration is Velocity over Time, so we have another factor in play: Acceleration = 50-30/5 = 20/5 = 4m/s^2

Net force = (50 kg)(4 m/s^2) = 50*4 = 200 Newtons

When thermal energy is added to an object, what happens to the motion of the particles?

A.
increases

B.
decreases

C.
remains unchanged

D.
decreases, then increases

Answers

The answer is A

Explanation:

The flow of electricity through the wires is called________?​

Answers

Answer:

Electric Current

Explanation:

You eat a salad for lunch then go to swimming practice. The energy transformation that happens would be:

Answers

Answer:

Chemical to Mechanical

Explanation:

Chemical energy is food and then you are putting it to work and it would be known as Mechanical.

can you please help me

Answers

Number 1 is D and number 2 is A

What is the kinetic energy of a 620.0 kg roller coaster moving with a velocity of 9.00 m/s? Round to 3 significant figures.

2,790 J
5,580 J
25,100 J
50,200 J

Answers

im pretty sure it’s 25,100 J because i had seen the same question a few times with this answer, hope it helps!

Answer:

c, 25,100 J

Explanation:

edge2o2o

The force that acts on an object lying on a surface, acting in a direction perpendicular to the surface is called ____________​

Answers

If it is on land gravitational force
If it is on water thrust

what are em waves expain in details

Answers

Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. ... They are hence known as 'electromagnetic' waves. The electric field and magnetic field of an electromagnetic wave are perpendicular (at right angles) to each other.

Hope this helps.
:)

If you have a piece of brass and a piece of aluminurn that have the same volume, which will have a larger mass?

Answers

Answer:

the aluminum would have the most mass

Ram travel 50metre on a straight road in 30second . hari covers the same distance on the same road in 45s . who has done more work ? who has more ? Explain in short​

Answers

Answer:

The ram has done more work because the rate at which the ram work is 1.6m/s and Hari is 1.1m/s

What would be the formula if you
wanted to solve for the
acceleration?

Answers

Answer:

acceleration = final velocity - initial velocity / time

V-U/T

Explanation:

Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt.

What happens to the pressure as air rises from the ground into the atmosphere?
Does it increase or decrease?

Answers

Answer:

please try brainlist answer

As the atmosphere expands the further you get from the Earth's surface, it becomes less dense and air pressure decreases. As you increase altitude (distance from Earth's surface) in an airplane, air pressure changes

कृपया ब्रेनलिस्ट का उत्तर केवल 1more उत्तर देने का प्रयास करें।

How far does the gravitational field of Earth extend?

Answers

I JUST NEED POINTSSS sorry hope you do good tho!
The earths gravitational pull will act on any object no matter the distance it just gets seeker the farther out you go

An object free falls for 3.5 seconds . How far does it fall?

Answers

we need more information such as how high it was falling from

Which of these is not a method of preventing the corrosion of metals?
A) galvanising
B) painting
C) plating
D) rusting

Answers

Answer:

D

Explanation:

rusting is actually the corrosion of metals so it can't be a way to prevent itself.

Which element accumulates in the environment due to the use of
fertilizers?
A. oxygen
B. hydrogen
C. nitrogen
D. carbon

Answers

To Find :

Which element accumulates in the environment due to the use of  fertilizers.

Solution :

Most of the fertilizers used in daily practice are nitrogen fertilizers .

When soil became waterlogged, soil organisms take the oxygen they need from nitrates, leaving the nitrogen in a gaseous form which escapes into the air.

Also, nitrogen is very stable and did not participate in most of the reactions.

So, nitrogen is accumulates in the environment .

Therefore, option C. is correct.

Find our the total distance between those 2 womens after 100 seconds. Refer the image for the full question ASAP. Give me a complete brief solution of this above question!​

Answers

Given

[tex]\small\bf\red{First\: Women}\begin{cases}\sf{Initial\: Velocity\: =\: 15m/s}\\\sf{Time\: Taken\: = 100\: seconds}\end{cases}[/tex]

[tex]\small\bf\green{Second\: Women}\begin{cases}\sf{Initial\: Velocity\: =\: 20m/s}\\\sf{Time\: Taken\: = 100\: seconds}\end{cases}[/tex]

To Find

[tex]\:\:\:\:\bullet\:\:\sf{Distance \: between \:them \:after \:{\sf{\blue{100 \:seconds}}}} \\ [/tex]

Solution

[tex]\\→\:\:\:\sf Distance\: travelled \:by \:1st \:women\: = \: Velocity \times Time\:taken[/tex]

[tex]→\:\:\:\sf 15 \times 100[/tex]

[tex]→\:\;\:\sf 1500m[/tex]

[tex]→\:\:\:\sf s_{1} = {\sf{\red{1500m}}} \\ \\ [/tex]

[tex]\Rightarrow\:\:\:\sf Distance \:travelled \:by\: 2nd \:women\: = \: Velocity \times Time\:taken[/tex]

[tex]\Rightarrow\:\:\:\sf 20 \times 100[/tex]

[tex]\Rightarrow\:\:\:\sf 2000m[/tex]

[tex]\Rightarrow\:\:\:\sf s_{2} = {\sf{\purple{2000m}}} \\ \\ [/tex]

[tex]\small{\underline{\bf{Now, \:Distance \:between \:them\: =\: s_{2} - s_{1}}}_{}}[/tex]

[tex]\hookrightarrow\:\:\:\sf 2000 - 1500[/tex]

[tex]\hookrightarrow\:\:\:\bf \pink{500m} \\ \\ [/tex]

[tex]{\underline{\bf{Hence, }}}[/tex]

Total Distance between them after [tex]\bf{100 \:seconds}[/tex] is [tex]\bf\orange{500m}[/tex]

Which of these is an example of mechanical energy being converted to sound energy?
baking cookies in the oven
playing a guitar
alarm clock

Answers

Playing a guitar I believe

Answer:

Playing Guitar

Explanation:

When yout pluck or strum that mechanical energy then the action of plucked and strumming will be converted to sound energy hence will produce the soothing music heard when a guitar is played

NEED HELP NOW 75 POINTSSSS

In Harry Bahrick’s study, he found participants to be really good at recognizing the __________ of old high school classmates.
A.
homes
B.
ages
C.
faces
D.
names

Answers

Answer:

faces

Explanation:

Answer:

C.FACES

Explanation:

E20 GOT A HUNDRED PERCENT

The number of protons equals the atomic number. TRUE OR FALSE?

Answers

Answer:

true

Explanation:

The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.

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