Question

A metal plate of mass 5 g is kept floating in air by firing
bullets each of mass 2.5 g with the same velocity. If 600
bullets are fired per minute and bullets rebound with the
same speed, then the velocity of each bullet is​

Answer 1

Answer:Weight of disc = mg = 5 kg × 10 m/s² = 50 N

Force exerted by 10 bullets must be equal to 50 N

F = Δp / t

F = nm × (v - u) / t

F = nm × (v - (v)) / t

F = 2nmv/t

From above

v = Ft / (2nm)

= (50 N × 1 s) / (2 × 10 × 50 × 10^-3 kg)

= 50 m/s

Speed of each bullet is 50 m/s

Explanation:please mark me brainiest