Question

A body mass 20kg falls from height of 20m taking g=10ms/2
i- calculate the kinetic energy at height point
ii-calculate the potential energy at highest point
iii- calculate the energy when body at it middle point​

Answer 1

Answer:

i =1/2 mv^2 = 1/2 ×20 ×10×10= 1000

ii= mgh = 20 × 10 × 20 = 4000

Answer 2

Answer:

1. Kinetic energy = mgh

M = 20 kg

H = 20 m

G = 10 ms/^2

: mgh

= 20 * 20 * 10

= 4000 m/s.

2.