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?

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

choosing tennis and golf balls is your inde choice.

their mass and volume are dep

answer and explanation;