On Mars, a 15 kg mass has a weight of 55.5 N.
What is the gravitational field strength on Mars?
0.27 N kg−10.27\text{ N kg}^{-1}0.27 N kg−1
3.7 N kg−13.7\text{ N kg}^{-1}3.7 N kg−1
40.5 N kg−140.5\text{ N kg}^{-1}40.5 N kg−1
832.5 N kg−1832.5\text{ N kg}^{-1}832.5 N kg−1
39 exam-style questions on OCR GCSE Physics Forces in action. Each one has a worked solution and a mark scheme showing where the marks go.