A boy stands on a diving board and tosses a stone into a swimming pool. The stone is thrown from a height of 2.50 m above the water surface with a velocity of 4.00 m/s at an angle of 60.0 degrees above the horizontal. As the stone strikes the water surface, it immediately slows down to exactly half the speed it had when it struck the water and maintains that speed while in the water. After the stone enters the water, it moves in a straight line in the direction of the velocity it had when it struck the water. If the pool is 3.00 m deep, how much time elapses between when the stone is thrown and when it strikes the bottom of the pool

A hot-air balloon is rising upward with a speed of 15.5 m/s at an angle of 32.8° with respect to the horizontal.  A rock is released from rest relative to the balloon when it is 938.9 m above the ground.  How much time elapses before the rock hits the ground?

A particle's position is given by  z(t) = −(7.30 m/s2)t2  for  t ≥ 0.  (Express your answer in vector form.) (a) Find the particle's velocity at  t = 2.50 s  and  t = 3.25 s. (b) What is the particle's average velocity during the time interval from  t = 2.50 s  to  t = 3.25 s?

a boy fires an arrow from a height of 1.80 m at an angle of 15° above the horizontal towards a target standing 15.00 m in front of him. He misses the target completely, and the arrow goes flying past the target and hits the ground 21.1 m behind the target.   Determine the initial velocity of the arrow in m/s.

A 0.2 kg rock is projected from the edge of the top of a building with an initial velocity of 7.56 m/s at an angle 58° above the horizontal. Due to gravity, the rock strikes the ground at a horizontal distance of 10 m from the base of the building. Assume: The ground is level and that the side of the building is vertical. The accelera- tion of gravity is 9.8 m/s2. 58 h 10 m How tall, h, is the building? Answer in units of m. 7.56 m/s Building

A person stands on a diving board and tosses a stone into a swimming pool. The stone is thrown from a height of 2.9 m above the water surface with a velocity of 2.8 m/s at an angle of 38° above the horizontal. As the stone strikes the water surface, it immediately slows down to exactly half the speed it had when it struck the water and maintains that speed while in the water. After the stone enters the water, it moves in a straight line in the direction of the velocity it had when. it struck the water. If the pool is 4 m deep, how much time elapses between when the stone is thrown and when it strikes the bottom of the pool? ttotal = S

On a beautiful spring day, Juan is playing a round of golf. He hits the golfball with an initial velocity of 37 m/s at an angle of 27.4°. If it hits the ground 5.8s later, how far does it travel? Ignore air resistance. Answer: m

A football is kicked with an initial velocity of 11.4 m/s at an angle of 27.4°. If it hits the ground 1.9s later, how far does it travel? Answer: m

A rock is kicked with an initial horizontal velocity of 10.0 m/s in the positive x direction from the top of a cliff of height H. What is the height H of the cliff from the ground? 10 m/s 55 m O 155 m O 120 m O 180 m O 77.0 m O 148 m O 98.9 m