The work done=700 joules
The mechanical advantage=8
Explanation
1.The force with which the player throws the ball F=20 newtons
The distance traveled by the ball D=35 m
we have to calculate the work done by the ball
W=F*D
=20*35=700 N/m=700 joules
2. the input force exerted on the lever =25 N
output force of the lever=200 N
we have to calculate the mechanical advantage which is the ratio of output force to input force
MA=output /input
=200/25=8
