Question

a toy car initially moving with a uniform velocity of 36km/h comes to stop in 3 secs . Find the retardation of the car in S.I. unit.​

Answer 1

Explanation:

$initial \: \: \: velocity = 36kph = \frac{36 \times 1000}{60 \times 60} mps = 10mps = u \\ final \: \: \: velocity = 0 \: mps = v \\ time \: \: \: elapsed = 3 \: \: \: seconds = t \\ retardation = \frac{(v - u)}{t} = \frac{0 - 10}{3} \\ retardation = 3.333 {}^{} \: \: mps {}^{2} { \: \: \: \: \: ans}^{}$

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