# Chapter-5: Laws Of Motion

1. Newton’s First Law of Motion defines –

• Energy
• Inertia
• Momentum of Inertia
• Work
Inertia

2. Measurement of which quantity is obtained through Newton’s 2nd law of motion? –

• Force
• Impulse
• Acceleration
• Momentum
Force

3. Which law of motion of Newton’s defines force?

• First
• Second
• Third
• None of these
First

4. To every action, there is an equal and opposite reaction which law of motion is this?

• First
• Second
• Third
• None of these
Third

5. Kinetic Friction is-

• Less than static friction
• More than static friction
• Equal to static friction
• None of these
Less than static friction

6. Newton’s which law is the real law of motion –

• Newton’s First Law of Motion
• Newton’s Second Law of Motion
• Newton’s Third Law of Motion
• None of these.
Newton’s Second Law of Motion

7. The product of mass and velocity is called –

• momentum
• force
• impulse
• pressure
momentum

8. The product of force and time which equals the change in momentum is called –

• momentum
• force
• impulse
• pressure
impulse

9. All objects resist a change in their state. It is called –

• force
• mass
• inertia
• momentum
inertia

10. Which of the following is not a conservative force?

• Force of friction
• Magnetic force
• Gravitational force
• Electrostatic force
Force of friction

11. Which of the following is a non-conservative force?

• Interatomic force
• Gravitational force
• Electrostatic force
• Viscous force
Viscous force

12. An object of mass 2kg is moving with the acceleration of 50 cm/s, Then force acting on it is –

• 1 N
• 10 N
• 100 N
• 25 N
1 N

13. In the case of uniform motion acceleration is –

• Zero
• Negative
• Positive
• None of these
Zero

14. The direction of the force of friction –

• Perpendicular to the direction of motion of an object
• Along the direction of motion of an object
• Opposite to the direction of motion of an object
• None of these.
Opposite to the direction of motion of an object

14. A jet engine works on the principle of conservation of –

• Mass
• Linear momentum
• Energy
• Angular momentum
Linear momentum

16. The units of impulse are the same as those of –

• Energy
• Power
• Velocity
• Momentum
Momentum

17. A cyclist bends while taking turn to-

• reduce friction
• generate required centripetal force
• reduce apparent weight
• reduce speed.
generate required centripetal force

18. Rocket propulsion is based on the principle of conservation of-

• Mass
• Energy
• Linear momentum
• Angular momentum
Linear momentum

19. Which physical quantity have the same unit as that of impulse?

• Energy
• Power
• Moment
• Velocity 