A golf ball (mass 0.045 kg) is hit with a club from a tee. The plot shows the force on the ball as a function of time in milliseconds. One millisecond is 10-3 seconds. What is its speed right after the hit

16.3 m/s

Explanation:

We are given that

Mass of golf ball=m=0.045 kg

We have to find the speed right after the hit.

Force,F=70 N

Change in momentum=Area of trapezium

Area of trapezium,A=

Using the formula

Initial velocity of golf ball=u=0

true tan speed = ang vel x radius

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.