Physics

Grade-7

Easy

Question

# Direction : Calculate the missing term

m = ?

v = 30 m/s

K.E. = 270 J

- 0.6 kg
- kg
- 10 kg
- 6 kg

Hint:

### 0.6 kg

## The correct answer is: 0.6 kg

### KE = mv^{2}

270 = × m × (30)^{2}

= = 0.6 kg

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