If the change in kinetic energy of a tennis ball hit by the racket is 29J, and the average force that the racket exerts on the ball
is 80. N, what is the distance that the force is exerted over?

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

answer: what are you talking about?

explanation:

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach