A 2-kg bowling ball is 1 meter off the ground on a post when it falls just before it reaches ground it is travelling 4.4 m/s assuming there is no air resistance which statement is true

mechanical energy is not conserved

initial potential energy is greater than final kinetic energy

mechanical energy is conserved

initial potential is less than the final kinetic

Question

Amina Benson

Physics

31 August, 14:56

A 2-kg bowling ball is 1 meter off the ground on a post when it falls just before it reaches ground it is travelling 4.4 m/s assuming there is no air resistance which statement is true

mechanical energy is not conserved

initial potential energy is greater than final kinetic energy

mechanical energy is conserved

initial potential is less than the final kinetic

+2

Answers (1)

Know the Answer?

Jessie Boone · Answer 1

mechanical energy is E=mgh + 1/2 mV²=2*9.8*1+1/2*2*4.4²=38.96J,

the only force is P, that is a conservative force so the answer is

mechanical energy is conserved and its value is 38.96J,