Physics
Grade-7
Easy
Question
A block is moving at a velocity of 40 m/s and has a mass of 1120 Kg. How much kinetic energy does the block have?
- 96 J
- 960 J
- 96000 J
- 9600 J
Hint:
96000 J
The correct answer is: 96000 J
m = 1120 kg
v = 40 m/s
KE =
mv2
![equals space 1 half space cross times space 1120 space cross times space 40 space cross times space 40](data:image/png;base64,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)
= 96000 J
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![KE space equals space 2 mv squared](data:image/png;base64,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)
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