CSEC Physics · 1991 · Paper 2 · Question 3(c)(ii)
The Moon moves in an orbit around the Earth at constant speed.
Explain how Newton's third law applies in this case.
The mark scheme is shown once you've answered.
Practise this questionOther parts of this question
- 3(a)Complete the statement of Newton's 1st Law: 'An object remains at rest...' and Newton's 3rd Law: 'If an object A exerts a force on object B...'[4 marks]
- 3(b)Use Newton's first law to explain why a passenger on a bus falls forward when the bus stops suddenly.[2 marks]
- 3(c)(i)On the provided diagram of the Moon orbiting Earth, draw the force or forces acting on the Moon.[2 marks]
- 3(d)(i)Draw on the diagram the force or forces acting on the ball at point A and at point B.[3 marks]
- 3(d)(ii)State the magnitude of the acceleration of the ball at point A and at point B.[3 marks]
More practice: the rest of this paper · more Dynamics: Motion in a Straight Line questions · all CSEC Physics past papers