10 An astronaut on the surface of the moon drops a ball from a point 2 m above the surface.
- Without any calculations, explain why a standard model using \(g = 9.8 \mathrm {~ms} ^ { - 2 }\) will not be appropriate to model the fall of the ball.
The ball takes 1.6s to hit the surface.
- Find the acceleration of the ball which best models its motion. Give your answer correct to 2 significant figures.
- Use this value to predict the maximum height of the ball above the point of projection when thrown vertically upwards with an initial velocity of \(15 \mathrm {~ms} ^ { - 1 }\).