Jacob is a little too excited about finishing his homework and throws his hands up in the to shout, "I'm done!" He accidentally drops his 2.3 kg pencil straight down from a height of 2.12 m. what will be the kinetic energy of the pencil just before it hits the ground?

2 answers

(1/2) m v^2 = m g h
2.3 kg?

That's some pencil!!

You sure you did not mean 2.3 g? That's too light.

You sure you meant pencil?