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A 4.0-kg object has 72 J of kinetic energy. Determine its speed.
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12 votes
12 votes
A 4.0-kg object has 72 J of kinetic energy.
Determine its speed.

User Jason Wirth
by
2.9k points

1 Answer

22 votes
22 votes

Answer:

6m/s

Step-by-step explanation:

v = sqrt of 2KE/m

Where:

KE = kinetic energy

m = mass of a body

v = velocity of a body

= sqrt of 2(72)/4

= sqrt of 144/4

= sqrt of 36

= 6m/s

User Clavio
by
2.8k points
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