Physics
Grade-7
Easy
Question
A person starts running at a speed of 30 cm/s. His weight is 1200 N. Considering the g as 10 m/s, what is its kinetic energy?
- 3.6 J
- 1.2 J
- 36 J
- 12 J
Hint:
3.6 J
The correct answer is: 3.6 J
m = 
= 120 kg
v = 30 
KE = 
mv2
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