MEDIUM
9th ICSE
IMPORTANT
Earn 100

Name the two factors on which the force needed to stop a moving body in a given time depends.

Important Questions on Laws of Motion

MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(C)>Q 2

Define linear momentum and state its S.I. unit.

EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(C)>Q 3
A body of mass m moving with velocity v is acted upon by a force. Write the expression for the change in momentum when v<<c, where c is the velocity of light.
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(C)>Q 3
A body of mass m moving with velocity v is acted upon by a force. Write the expression for the change in momentum when v→c, where c is the velocity of light.
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(C)>Q 3
A body of mass m moving with velocity v is acted upon by a force. Write the expression for the change in momentum when v<<c, but, m ,  does not remain constant.(where c is the velocity of light.)
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(C)>Q 4

Show that the rate of change of momentum= mass X acceleration. Under what condition does this relation hold ?

 

EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(C)>Q 5
Two bodies A and B of the same mass are moving with velocities v and 2v respectively. Compare their inertia.
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(C)>Q 5
Two bodies A and B of the same mass are moving with velocities v and 2v respectively. Compare their momenta .
EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(C)>Q 7
State Newton's second law of motion. What information do you get from it ?