MEDIUM
9th CBSE
IMPORTANT
Earn 100

If the earth attracts a body with a force of 20 N, then what force is exerted on the earth by the body?

Important Questions on Force and Laws of Motion

MEDIUM
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Formative Assessment>Q 5

Action and reaction act on the same body.

MEDIUM
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Formative Assessment>Q 6

Any two forces which are equal and opposite form an action-reaction pair.

MEDIUM
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Formative Assessment>Q 7
Acceleration is inversely proportional to mass when _____ (Velocity / Force) is constant.
EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Formative Assessment>Q 8
An isolated force is _______ .
EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Formative Assessment>Q 10

What is Newton's third law? Give some examples where this law can be applied.

EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Formative Assessment>Q 1
A large truck and a car, both moving with a velocity of magnitude v, have a head-on collision after which both of them comes to halt. Which vehicle experiences the greater force of impact?
MEDIUM
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Formative Assessment>Q 2

Newton's laws are universal.

EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Formative Assessment>Q 3

Conservation of linear momentum for a system is applicable only when the external forces acting on a system are zero.