Question 1: Distinguish between kinetic energy and gravitational potential energy, using your own words and understanding.
Question 2: A toy rocket of mass 5 kg is launched upwards with sufficient speed to reach a maximum height of 25 m.
(a) Calculate the launch speed of the toy rocket.
(b) Calculate the momentum of the toy rocket at a height of 20 m.
(c) Sketch a graph to show the variation of the kinetic energy of the toy rocket with height from the time the rocket was launch until it reached maximum height.