Question

A mass of 2000 kg is raised 5.0 m in 10 seconds what is the potential energy of the mass at this height?

A. 98,000 J
B. 9,800 J
C. 0 J​

Answer 1

0 J

Step-by-step explanation:

the object isn't moving, there is no kinetic energy. This question is worded poorly and made this not obvious.

Answer 2

A. 98,000 J

Step-by-step explanation:

The gravitational potential energy of an object is given by

U = mgh

where

m is the mass of the object

g is the gravitational acceleration

h is the heigth above the ground

In this problem,

m = 2000 kg

g = 9.8 m/s^2

h = 5.0 m

Substituting into the equation, we find

`U=(2000 kg)(9.8 m/s^2)(5.0 m)=98,000 J`