Question

A 0.0450-𝑘𝑔 golf ball initially at rest is given a speed of 25.0 𝑚/𝑠 when a club strikes it. If the club and ball are in contact for 2.00 𝑚𝑠, what average force acts on the ball? Is the effect of the ball’s weight during the time of contact significant? Why or why not?

Answer 1

Given:

$m=0.0450\:\rm kg$

$\Delta v=25.0\:\rm m/s$

$\Delta t=0.002\:\rm s$

The average force on the ball

$$F=ma=m\frac{\Delta v}{\Delta t}\\ =0.045*25.0/0.002=562.5\:\rm N$$

The effect of the ball’s weight during the time of contact is significant.