A 0.54-kg ball is thrown vertically upward with an initial speed of 14.0 m/s. What is the speed of the ball when it has travelled three-quarters of the distance to its maximum height?

A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x<0 and by y = -(x^2)/d for x>0.  Here we go again this time, d = 4.13 m. Suppose the block starts on the track at x = 0. What minimum initial velocity (moving to the right) must the block have such that it will leave the track at x = 0 and go into freefall?      9.00 m/s      6.36 m/s      12.29 m/s      9.33 m/s

A person throws a ball upward into the air with an initial velocity of 15.0 m/s. (a) Calculate how long does it takes to reach its maximum height?  (b) Calculate how high it goes?  (c) Calculate how long the ball is in the air before it comes back to the hand. Ignore air resistance.  (d) Calculate the velocity of the ball when it returns to the thrower’s hand (point C in figure)

An explosion causes debris from the ground to rise vertically with an initial velocity of 160 feet per second. What is the speed of debris when the height is 300 feet?

A ball is dropped (from rest) from a window and hits the ground with a speed of 7.0m/s. If the ball were dropped from double the height, what would be its speed (in m/s) when it hits the ground?   Your Answer:

A brave cliff diver jumps off the cliff of Tropea, Calabria (Italy), from a height if 16.35 m, from rest. What is the speed with which the diver hits the surface of the water?

A student launches a small rocket which starts from rest at ground level. At a height h=1.04km, the rocket reaches a speed of vf=391m/s. At that height, the rocket runs out of fuel, so there is no longer any thrust propelling it. After the rocket's engine turns off at a height of h=1.04km, it continues to move upward due to the velocity that it reached. What is the rocket's acceleration, in meters per squared second, during the period from engine shutoff until it returns to the ground? Ignore air resistance.

A child throws a stone downward from the top of a cliff with a speed of 4m/s. You notice that it took 2 seconds for the stone to hit the ground. What is the height of the cliff? (Start with a function for the acceleration using g ≈ 9.8m/s2 .

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?

A baseball is thrown vertically upward with an initial velocity of 9 m/s. Neglecting air friction, at what height will the baseball be after 5 seconds?