Question

A shell of mass 0.02 kg is fired by a gun of mass 100 kg If the muzzle speed of the shell is 60 m/s, what is the recoil speed of the gun ?​

Answer 1

Answer:

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Answer 2

Answer:

Mass of gun M = 100kg

mass of shell m = 0.020kg

Velocity of shell v = 60m/s

Recoil velocity of Gun V=?

initial velocities of both gun and shell will be zero

so, the initial momentum of the system will be zero.

According to the law of conservation of momentum,

Initial momentum = Final momentum

so,

0=mv-MV

∴v=mv/M

=

100

0.020×60

= 1.2m/s

∴recoil velocity of Gun=1.2m/s