Question

addition of mass 20 gram is kept floating horizontally In Air by firing 300 bullets per minute which rebound from the dish with same speed in opposite direction ​

Answer 1

Answer:

Suppose speed of firing is V then after

rebounding the momentum frees fessed

to the dis will be charge in momentumΔP=−mv−(mv)=−2mv↑initialValue=∣ΔP∣=2mv

⇒ Fr 10 bullet10×2=20mvm=0.05k

⇒∣ΔP∣ total =vtime Δt=1 second

⇒ Fore entered = Δt∣ΔP∣ total = 1v

=v Newton

it should balance the eight of disc

to prevent it from falling

So =Mg=1×9.8

⇒v=9.8mls.

Step-by-step explanation:

Please mark as brainliest answer and follow me please and thank me please Because I am a very good boy