Question

Two object ‘A’ and ‘B’ of same mass are moving with velocities ‘v’ and ‘-v’, the ratio of their kinetic energy( considering A:B) is

Answer 1

Explanation:

(a) Since inertia is a measure of mass which is same for both bodies, so the ratio of inertia for two bodies will be

1

1

(b) Momentum

P=m×v

P

1

=m×v=mv

P

2

=m×3v

P

2

P

1

=

3mv

mv

=

3

1

(c) Force

F×T=Momentum

F=

T

Momentum

F

1

=

1

1

F

2

=

1

3

F

2

F

1

=

3

1