A ball is thrown upward at 12 m/s from the top of a 50 meter tall building.. (a) What was its final velocity? (b) How long did it take to hit the ground?

A jet plane has a takeoff speed of vto = 72 m/s and can move along the runway at an average acceleration of 1.7 m/s2. If the length of the runway is 1.4 km, will the plane be able to use this runway safely? O Yes O No Defend your answer.

A ball is thrown off the top of a 30m cliff with horizontal velocity of 10 m/s. How far from the base of the cliff does the ball land? Express answer in meters.

If a 1.3 kg ball is dropped from the top of a 33.7 meter tall building, what is the maximum velocity of the ball just before it hits the ground?

A hot-air balloon is ascending at the rate of 13 m/s and is 87 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?

A soccer ball starts from rest and accelerates with an acceleration of 0.385 m/s2 while moving down a 8.50 m long inclined plane. When it reaches the bottom, the ball rolls up another plane, where, after moving 14.75 m, it comes to rest. (a) What is the speed of the ball at the bottom of the first plane (in m/s)? (Round your answer to at least two decimal places.) m/s (b) How long does it take to roll down the first plane (in s)? (c) What is the magnitude of the acceleration along the second plane (in m/s?)? m/s2 (d) What is the ball's speed 8.20 m along the second plane (in m/s)? m/s (e) What If? You change the angles of the two inclines in such a manner that the new acceleration down the first incline is a, new down = 2a initiel down and up the second incline is a, new un x initial up, What is the ball's speed 8.20 m up the second plane (in m/s)? 2 m/s

A worker at the top of a 425-m-tall television transmitting tower accidentally drops a heavy tool. If air resistance is negligible, how fast (in m/s) is the tool going just before it hits the ground?

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

From the top of a 120 m high cliff, a ball is thrown downward at a velocity of 20 m/s. How long is the ball in the air?

A stone is dropped from the upper observation deck of a tower, 200 m above the ground. (Assume g = 9.8 m/s2.) (a) Find the distance (in meters) of the stone above ground at time t. s(t) = 4.9t + 200 (b) How long does it take the stone to reach the ground? (Round your answer to two decimal places.) 6.39 (c) With what velocity does it strike the ground? (Round your answer to one decimal place.) 62.6 m/s (d) If the stone is thrown downward with a velocity of 9 m/s, how long does it take to reach the ground? (Round your answer to two decimal places.)