Question

A body of mass 2kg makes an elastic collision with another body at rest and continuos to moves in the original direction with a speed equal to one third of its original speed . find the mass of the second body​

Answer 1

Explanation:

HEY MATE HERE IS YOUR ANSWER

By conservation of linear momentum

2v

0

=2(

4

v

0

)+mv⇒2v

0

=

2

v

0

+mv⇒

2

3v

0

=mv....(1)

since collision is elastic

v

separation

=v

apprach

⇒v−

4

v

0

=v

0

⇒

4

5v

0

=v....(2)

equating (2) and (1)

4

3v

0

=m(

4

5v

0

)⇒m=

5

6

=1.2kg

HOPE IT HELPS YOU