A projectile launcher has a mass of 3 kg. It fires a projectile of mass 0.08 kg horizontally at a speed of 300 m/s.
a. What is the total momentum of the system before the projectile is fired? b. what is the total momentum of the system after the projectile is fired? c. what is the recoil velocity of the launcher?

1000N

Explanation:

Mass of the gun m

1

=3kg

Mass of the bullet m

2

=30 g=0.03 kg

Velocity of bullet v

2

=100 m/s

i) According to the law of conservation momentum

m

1

×v

1

=m

2

×v

2

3×v

1

=0.03×100

Recoil velocity v

1

=

3

100×0.03

=1m/s

ii) Initial velocity of the gun u=0 m/s

Final velocity of the gun v=1m/s

Time t=0.003 s

Acceleration a=

t

v−u

=

0.003

1−0

=

3

1000

m/s

2

Force=m×a=3×

3

1000

=1000N

Thank you

Iread this book last year so take this with a grain of salt.gene jumps from the tree to compete with finny due to the fact that gene is always trying to do better than finny. he is put under the grasp of peer pressure due to finny almost forcing him to do this. ever since he first jumped finny kept pressuring him to jump since he thought gene enjoyed jumping.rather than uses this answer you should probably just reread chapters 3-4