Question

A ball of 200g falls from a height of 5mtr what is its potential energy when it just reaches the ground (gravity=10ms-2)

Answer 1

hope this helps you out.

Answer 2

Answer:-

Given:-

height from which ball is dropped = 5m.

mass of the ball = 200g = (200/1000) kg = 0.2 kg

acceleration due to gravity = 10m/s^2

potential energy = mgh

= 0.2 ×5 ×10

= 10 Joule.  

P.E at the highest point= K.E at the lowest point (when it is just about to hit the ground)

Explaination:-

potential energy:-

Kinetic energy  is energy possessed by an object in motion. The earth revolving around the sun, you walking down the street, and molecules moving in space all have kinetic energy.

Kinetic energy:-

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2.Kinetic energy is usually measured in units of Joules (J); one Joule is equal to 1 kg m2 / s2.