# Physics

posted by .

A rock is thrown horizontally off of a cliff. It starts with a velocity of 4.2 m/s and the cliff is 68.2 m high.

How far out from the bottom of the cliff does the rock fall? ﻿﻿

57m﻿

59m ﻿

63m ﻿

45.8m ﻿

• Physics -

time to fall from height of clift:

68.2=1/2 g t^2

t= sqrt (68.2/4.9)=3.7 sec

distance horizontal= time*initial velocity

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### Physics

A rock is thrown from on a cliff with the velocity of 15 m/s at an angle of 30 degrees. it takes the rock 6.30 seconds to hit the ground. how high was the cliff?
2. ### Physics

A rock is thrown from on a cliff with the velocity of 15 m/s at an angle of 30 degrees. it takes the rock 6.30 seconds to hit the ground. how high was the cliff?
3. ### physics

A rock is thrown from a cliff top at 18m/s, 25 degrees above the horizontal. It lands on the beach 4.2 seconds later. a) What is the height of the cliff?
4. ### Tulane Physics

a rock is thrown unward off a cliff at a 45 degree angle. THe rock falls back to the elevation it was thrown from after 3.56 seconds. It hits the water 5.31 seconds after it was thrown. How high is the cliff?
5. ### physics

c) A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 32 m high. When it hits the ground at the base of the cliff the rock has the speed of 29 m/s. Assuming that the air resistance can be ignored, find i. the …
6. ### physics

A rock is thrown vertically upward from the edge of a cliff. The rock reaches a maximum height of 20.6 m above the top of the cliff before falling to the base of the cliff, landing 6.44 s after it was thrown. How high is the cliff?
7. ### Physics

if rock A is dropped from a cliff and rock B is thrown downward off the cliff, which of the two has a greater velocity?
8. ### physics

A rock is thrown vertically upward from the edge of a cliff. The rock reaches a maximum height of 20.6 m above the top of the cliff before falling to the base of the cliff, landing 6.54 s after it was thrown. How high is the cliff?
9. ### Physics

A rock is thrown horizontally off of a cliff. It starts with a velocity of 4.2 m/s and the cliff is 68.2 m high. How long does the rock fall?
10. ### Physics Please help!!

A rock is thrown horizontally off of a cliff. It starts with a velocity of 4.2 m/s and the cliff is 68.2 m high. How long does the rock fall?

More Similar Questions