Non-Earth gravity contexts

A question is this type if and only if the motion occurs on the Moon, Mars, or another context where g ≠ 9.8 and you must find or use the different gravitational acceleration.

2 questions · Easy -1.3

3.02d Constant acceleration: SUVAT formulae3.02h Motion under gravity: vector form
Sort by: Default | Easiest first | Hardest first
OCR MEI AS Paper 1 2020 November Q10
5 marks Moderate -0.8
10 An astronaut on the surface of the moon drops a ball from a point 2 m above the surface.
  1. 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.
  2. Find the acceleration of the ball which best models its motion. Give your answer correct to 2 significant figures.
  3. 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 \(15 \mathrm {~ms} ^ { - 1 }\).
OCR MEI AS Paper 1 2021 November Q2
2 marks Easy -1.8
2 An unmanned craft lands on the planet Mars. A small bolt falls from the craft onto the surface of the planet. It falls 1.5 m from rest in 0.9 s . Calculate the acceleration due to gravity on Mars.