1.

A disc of mass 10 g is kept floating horizontal in the air by firing bullets, each of mass 5g, with the same velocity at the same rate of 10 bullets per second. The bullets rebound with the same speed in positive direction . The velocity of each bullet at the time of impact is (Take g = 9.8 ms^(-2))

Answer»

`196 cm s^(-1)`
`98 cm s^(-1)`
`49 cm s^(-1)`
`392 cm s^(-1)`

Answer :B


Discussion

No Comment Found

Related InterviewSolutions