Question

bullet of mass 10 grams is fired with a velocity of 8m/s. What is its kinetic energy​

Answer 1

Answer:

PSP

Explanation:

-0.25 m s

−1

Initial momentum of the system P

i

=0

Given: M

bullet

=0.02 kg V

bullet

=100 m/s M

gun

=8 kg

Let the recoil velocity of gun be V.

Applying the conservation of linear momentum : P

f

=P

i

Or M

gun

V+M

bullet

V

bullet

=0

Or 8V+0.02×100=0

⟹ V=−0.25 m/s