P1.- A high diver leaves the end of a 5.0 m high diving board and strikes...

P1.- A high diver leaves the end of a 5.0 m high diving board and strikes the water 1.3 s later, 3.0 m beyond the end of the board. Considering the diver as a particle, determine: (a) her initial velocity Vo (b) the maximum height reached, (c) the velocity Vf with which she enters the water.

P2.- A rollercoaster moves 200 ft horizontally and then rises 135 ft at an angle of 30 degrees above the horizontal. It next travels 135 ft at an angle of 40 degrees downward. What is its displacement from its starting point?

P3.- A model rocket is launched straight upward with an initial speed of 50 m/s. It accelerates with a constant upward acceleration of 2 m/s2 until its engines stop at an altitude of 150 m.

a) What is the maximum height reached by the rocket?

b) How long after liftoff does the rocket reaches its maximum height?

c) How long is the rocket in the air?

Solutions

Expert Solution

genius_generous answered 1 year ago

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