Question

A doll with a mass equal to 0.5 kg was dropped from a window on the 3rd floor, at a height of 10 m from the floor. What is the potential gravitational energy of the doll when it hits the ground? Consider the acceleration of gravity equal 10 m/s².

15 J

25 J

35 J

45 J

50 J

Answer 1

Resposta:

50 J

Explicação:

The gravitational potential energy can be written as

U = m.g.h

where

m = mass

g = acceleration due gravity

h = height

We have

m = 0.5 kg

h = 10 m

g = 10 m/s²

hence

U = (0.5).10.10

U = 50 J    (answer)