Physics

Grade-7

Easy

Question

# A body of mass 100 Kg moves with a kinetic energy of 2000 J. What will be its new kinetic energy if it moves at a speed of 50 m/s?

- 250000 J
- 125000 J
- 25000 J
- 12500 J

Hint:

### 125000 J

## The correct answer is: 125000 J

### m = 100 kg

v = 50 m/s

KE = mv^{2}

= 125000 J

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