A one-kilogram plate on a shelf has 19.6 J of potential energy. If the plate falls from the shelf, what will its maximum velocity be?

Question

Physics

Jair Black

13 September, 17:04

A one-kilogram plate on a shelf has 19.6 J of potential energy. If the plate falls from the shelf, what will its maximum velocity be?

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Answers (2)

Know the Answer?

Felipe · Answer 1

(1/2) m v^2 = 19.6

.5 * 1 * v^2 = 19.6

Alexus Espinoza · Answer 2

There are plenty methos, I'll do it like this.

We know that:

Epg=mgh

Work for h:

h = (Epg) / mg

h = (19,6J) / 1kg*9,8m/s²

h=2m

Now, we know that:

v=√2gh

v=√2*9,8m/s²*2m

v=6,26m/s