Question

The kinetic energy of a body moving with a velocity 10 m/s is 100 J, the mass of the moving body is

Answer 1

Answer:

Given,

Initial velocity, of m

1

and m

2

is u

1

and u

2

Final velocity, of m

1

and m

2

is v

1

and v

2

From conservation of momentum

Initial momentum = final momentum

m

1

u

1

+m

2

u

2

=m

1

v

1

+m

2

v

2

10m

1

+m

2

×0=2m

1

+5m

2

m

2

m

1

=

8

5

Hence, ratio of mass is

8

5

Answered By