Physics
Grade-7
Easy
Question
There is a bell at the top of a tower that is 45 m high. The bell weighs 190 N. The bell straps break, and it comes tumbling down at a speed of 15 m/s. What is its kinetic energy?
- 2181 J
- 2000 J
- 2200 J
- 21375 J
Hint:
2181 J
The correct answer is: 2181 J
m = 
kg
v = 15 m/s
KE = 
mv2
= 2181.122 J
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