Question

A person is going up in a lift with constant acceleration to metre per second square when the lift speed is 10 metre per second he dropped from a height of 2 m if the point will hit the floor at time

Answer 1

Answer:

0.2sec

Explanation:

u=0

h=2m

h=ut+1/2gt^2

2=1/2×10t^2

t^2=0.4

t=0.2sec