A car is moving in a straight line with speed $18 k m p h$ . It is stopped in $5 s$ by applying the brakes. Find the speed of the car in $m s^{- 1}$ .

5

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Solution

The correct option is A $5$
$18 k m p h =$ $\frac{18 \times 1000}{60 \times 60}$ $m s^{- 1} = 5 m s^{- 1}$

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