A-LevelPhysicsDynamics9702/12 · Oct/Nov 2020 · Q81 Mark
What is not a statement of one of Newton's laws of motion?
AIf body X exerts a force on body Y, body Y exerts an equal and opposite force on body X.
BIf no resultant force acts on a body it has constant velocity.
CThe rate of change of momentum of a body is proportional to the resultant force acting on it
and takes place in the direction of the force.
DThe total momentum of a system of interacting bodies is constant if there is no external force.
✓ Correct answer
D: The total momentum of a system of interacting bodies is constant if there is no external force.
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