Question

A 5.0 kg box falls from a height of 20.0m. Just before hitting the ground what is the object's kinetic energy?

Answer 1

I know the formula is 1/2mv^2 but how do you find the answer without the velocity?

Answer 2

to find final velocity,use 3rd equation of motion :-
\[\large \bf v^2=u^2+2as\]
where, u=0 , a=10 m/s^2 and s=20 m

Answer 3

hope you can solve your question ! @endoftime14

Answer 4

Thank you!! :D

Answer 5

your welcome :)