Physics

Grade-7

Easy

Question

# Direction : Calculate the missing term

m = 12 kg

v = ?

K.E. = 240 J

- 2 m/s
- 20 m/s
- 40 m/s
- m/s

Hint:

### 2√10 m/s

## The correct answer is: 2 m/s

### KE = mv^{2}

240 = × 12 × v^{2}

^{}

= 40

v = 2 m/s

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