Question

A body of mass 100 kg is dropped from a height of 100m. the body will have velocity? a)4m/s b)14m/s c)24m/s d)16m/s​

Answer 1

Answer:

Correct option is

C

80 J

Given,

Initial velocity, u=0

Time, t=4sec

Apply equation of kinematic.

V=u+gt

V=0+10×4=40ms

−1

Kinetic energy,K.E=

2

1

mV

2

=

2

1

×0.1×40

2

=80J

Explanation:

please mark as brainlist