A 0.240-kg billiard ball that is moving at 3.00 m/s strikes the bumper of a pool table and bounces straight back at
2.40 m/s (80% of its original speed). The collision lasts
0.0150 s. (a) Calculate the average force exerted on the
ball by the bumper. (b) How much kinetic energy in
joules is lost during the collision? (c) What percent of the
original energy is left?

50 inches should be the resultant vector

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

the ima (higher than 1m) will be greater than the ima with the height of 1m.