Question

A brick of mass 2 kg is dropped from a rest position at certain height . find the height if the brick strike the ground with a velocity of 19.6 m/s

Answer 1

Answer:

19.6

initial vel=0 (since it started from rest)

final vel=19.6

acceleration=9.8

using 3rd eq of motion

2as=v^2-u^2

2x9.8xs=19.6x19.6

2s=2x19.6

s=19.6

Explanation: