Question

At what height could an object with a gravitational potential energy equal to 400 J, which has a mass equal to 4 kg, be launched? g = 10 m / s².

94m

6m

69m

33m

10m

Answer 1

Resposta:

10 m

Explicação:

The gravitational potential energy can be written as

U = m.g.h

where

m = mass

g = acceleration due gravity

h = height

We have

U = 400 J

m = 4 kg

g = 10 m/s²

h = ?

then

U = m.g.h

400 = 4.10.h

400 = 40.h

h = 400/40

h = 10 m    (answer)