Physics MCQs for Class 9 with Answers Chapter 2

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The weight of body is 147 N, Its mass will be ________ when g = 10 ms-2
1.47 kg
14.7 kg
47 kg
1.51 kg

A body of mass 5 kg i moving with a velocity of 10 ms-1. Find the force required to stop it in 2s.
5 N
25 N
20 N
30 N

2nd law of motion is stated as:
F=m/a
F=ma
F=a/m
F=ma2

The product of mass and _______ is called momentum;
Velocity
Force
Acceleration
None

Acceleration is produced by 20 N force it is due to:
Inertia
Force
Momentum
None

The formula to determine the centripetal force is:
Ms
mv2/r
Ns
Ns-1

If the mass of moving body in a circle is doubled then centripetal force wil be:
Doubled
Half
4 times
Same

Newton’s first law of motion is known as law of ___________________
Force
Inertia
A and B both
None

Momentum is quantity
Scalar
Vector
Base
All

The momentum of two or more than two bodies intersacting remain constant in:
Law of inertia
Isolated system
System
None

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