Motion Laws Quiz (Class 9 Maharashtra)

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MCQs on laws of motion

Sukanya Pal

India

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Motion Laws Quiz (Class 9 Maharashtra)


Froggy Jumps Motion Laws Quiz (Class 9 Maharashtra)Version en ligne MCQs on laws of motion par Sukanya Pal 1 Which law states that a body at rest stays at rest unless acted upon by a net external force? a Second Law of Motion (F = ma) b Third Law of Motion (Action-Reaction) c First Law of Motion (Law of Inertia) 2 What does Newton's second law relate to a moving object? a Energy changes cause motion b Net external force equals rate of change of momentum c Force causes circular motion 3 Which quantity is defined as momentum? a Potential energy b Kinetic energy c Product of mass and velocity 4 Action-reaction forces act on which bodies? a The same body twice b Two different bodies c Only at rest 5 Which factor does inertia depend on? a Height b Mass c Speed 6 Which of the following best describes friction in motion? a A retarding force opposite to motion b A driving force in same direction c Zero in all cases 7 If a net external force is zero, which is true about the motion of a body? a It accelerates equally b It maintains its state of motion c It comes to rest immediately 8 Which law explains why a rocket moves forward when exhaust gases are expelled backward? a Newton's Third Law b First Law c Second Law 9 Momentum is conserved in which type of collision? a Isolated system with no external impulse b Only in elastic collisions c When external force acts 10 What is the unit of momentum? a Joule b N·m c kg·m/s