rocket, on an unknown planet, launches straight upward. Starting from rest, the rocket accelerates until it reaches 25 m/s then maintains that velocity until its boosters shut off. It eventually falls back to the planet.

From approximately what floor of a building must a car be dropped from an at rest position so that it reaches a speed of 80.7ft/s (55 mi/h) when it hits the ground? Each floor is 12ft. higher than the one below it.

A pole vaulter is momentarily motionless as he clears the bar, which is set 4.2 m above the ground. He then falls onto a thick cushion. The top of the cushion is 80 cm above the ground, and it compresses by 50 cm as the pole vaulter comes to rest. What is his acceleration as he comes to rest on the cushion?

An object is thrown straight upward with an initial velocity of 20.0 m/s j. Upon reaching the ground below, its velocity is -30.8 m/s j. From what distance above ground level was the object thrown?

Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly elastic glancing collision. The green disk is initially at rest and is struck by the orange disk moving initially to the right at vi = 4.40 m/s as in Figure a, shown below. After the collision, the orange disk moves in a direction that makes an angle of 8 = 40.0° with the horizontal axis while the green disk makes an angle of = 50.0° with this axis as in Figure b. Determine the speed of each disk after the collision. of=1 m/s m/s Vgf= Before the collision After the collision. b of Ⓡ

A particle is moved over an XY plane with acceleration components ax = 1.0 m/s2 and ay = -2.0 m/s2. Its initial velocity has components Vix = 8.0 m/s and Viy = 13 m/s. What is the speed of the particle after 4 seconds ?

You throw a 19.6-N rock vertically into the air from ground level. You observe that when it is 10.0 m above the ground, it is traveling at 20.0 m/s upward. What is the rock's initial speed as it left the ground? 32.4 m/s O 14.0 m/s 24.4 m/s 30.4 m/s O 17.3 m/s

Please use these equations to solve the problem:  v=v0+at  x=x0+v0t+1/2at2 Part A:  A stone is thrown upwards from the edge of a cliff 18 m high. It just misses the cliffon the way down and hits the ground below with a speed of 18.8 m/s. (a) With what velocity wasit released? (b) What is its maximum distance from the ground during its flight? Part B:  A rocket is fired vertically upward with an initial velocity of 80 m/s. It acceleratesupward at 4 m/s2 until it reaches an altitude of 1000 m when its engines fail and it enters free fall.(a) How long is the rocket in motion? (b) What is its maximum altitude? (c) What is its velocityjust before it crashes back into the earth? Part C:  A car moving at a constant speed of 30 m/s suddenly stalls at the bottom of a hill.The car undergoes a constant deceleration of 2 m/s2 while ascending the hill. (a) Write equationsfor the position and velocity as functions of time, taking x = 0 at the bottom of the hill. (b) Whatis the maximum distance…

If an object were to freely, from what height would it need to drop to reach a speed of 70.0m / s before reaching the ground?

Omar throws a rock down with speed 14 m/s from the top of a tower. The rock hits the ground after 6.8 s. What is the height of the tower? (air resistance is negligible)