An astronaut has a weight of 800 N on the Earth.
The gravitational field strength on the Earth is 10 N/kg.
The gravitational field strength on the Moon is 1.6 N/kg.
What are the mass and the weight of the astronaut on the Moon?
Mass 80 kg80\ \text{kg}80 kg and weight 500 N500\ \text{N}500 N
Mass 13 kg13\ \text{kg}13 kg and weight 128 N128\ \text{N}128 N
Mass 50 kg50\ \text{kg}50 kg and weight 80 N80\ \text{N}80 N
Mass 80 kg80\ \text{kg}80 kg and weight 128 N128\ \text{N}128 N
46 exam-style questions on OCR GCSE Physics 2.3 Forces in action, covering 2.3.1 Stretching, bending and compressing, 2.3.2 Elastic and plastic deformation, 2.3.3 Force and extension of a spring, 2.3.4 Linear and non-linear force-extension behaviour, 2.3.5 The spring constant, 2.3.6 Work done in stretching, 2.3.7 Gravitational fields, 2.3.8 Weight and gravitational field strength, 2.3.9 Acceleration in free fall, 2.3.10 Relating force, mass and gravitational field strength, 2.3.11 Forces causing rotation, 2.3.12 The moment of a force, 2.3.13 Levers and gears, 2.3.14 Pressure in fluids, and 2.3.15 Pressure, force and contact area. Each one has a worked solution and a mark scheme showing where the marks go.