an object Falls from rest from the top of a cliff. Another object is thrown downward from the same height 1.8 seconds later with the initial speed of 35.0 m/s.   (a) if both objects at the ground  simultaneously, how high is the cliff? (b) if, while the objects or airborne, earthquake opens a whole 20 m deep in the ground, with what speed will the second object hit the bottom

A thoughtful person on a bridge reflecting on his awesome Physics class sees a small stone by his feet. Hmm, he thought to himself. Using his foot he slowly nudged the stone off the surface of the bridge and using his cell phone he timed how long it took to hit the water, about 1.75 s. How high (m) is the bridge above the water? (neglect air resistance)

At what speed must a basketball player leave the ground to rise 1.1 m above the floor in an attempt to get the ball?

A rock is thrown from a bridge 21 m above water with an initial speed of 14 m/s. Assuming negligible air resistance, what is the speed that the rock hits the water with, in meters per second?

A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 31m high. When it hits the ground at the base of the cliff, the rock has a speed of 33 m/s.A) Assuming that air resistance can be ignored, find the initial speed of the rock. Answer is 22 m/sB)Find the greatest height of the rock as measured from the base of the cliff.

The single cable supporting an unoccupied construction elevator breaks when the elevator is at rest at the top of a 120-m-high building. (a) With what speed does the elevator strike the ground? (b) How long is it falling? (c) What is its speed when it passes the halfway point on the way down? (d) How long has it been falling when it passes the halfway point?

A projectile is fired from point A at the edge of a cliff, whose initial velocity components are v0x = 60.0m / s and v0y = 175m / s. The projectile rises and then falls into the sea at point P. The projectile flight time is 40.0s and it does not experience appreciable air resistance in flight. a) Make a diagram of the problem, b) Determine how far it falls, c) what is the height of the cliff? and d) at what angle was it shot?

A young child uses a slingshot to launch a rock straight up at a speed of 12 m/s and then catches it at the point from where he launched it. What is the maximum height that the rock reaches?

A rock is thrown straight downward near the Earth’s surface with initial velocity of 20m/s down.  Assuming it doesn’t reach the ground, after 4 seconds its speed will be about

A person sitting on the ground floor of a building notices through the window, of height 1.5 m, a ball dropped from the roof of the building and crosses the window in 0.1 s. What is the velocity of the ball when it is at the topmost point of the window? (g-10 m/s²) (1) 20 m/s (2) 15.5 m/s (3) 14.5 m/s (4) 4-5 m/s