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Determine the mechanical energy of this object: 1-kg ball rolls on the ground at 2 m/s A. The ball is on the ground, so the mechanical energy is zero B. 2 J C. 1 J D. 4 J

Determine the mechanical energy of this object: 1-kg ball rolls on the ground at 2 m/s A. The ball is on the ground, so the mechanical energy is zero B. 2 J C. 1 J D. 4 J
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4 votes
Determine the mechanical energy of this object: 1-kg ball rolls on the ground at 2 m/s

A. The ball is on the ground, so the mechanical energy is zero
B. 2 J
C. 1 J
D. 4 J

User Otherchirps
by
7.5k points

2 Answers

4 votes

The answer is 2 Joules.

User CCJ
by
8.6k points
5 votes
The potential energy would be zero. Only kinetic energy is present in this case. To find out what the answer is we do the equation: mv^2/2 soo...

KE =mv^2/2
KE= 1(2^2)/2 which the answer will come up by 2 Joules.
User Wilfried Kopp
by
8.2k points
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