Question

A car starts moving from rest.if it gains a velocity of 72km/hr after 10 seconds,what is the acceleration of the car​

Answer 1

Explanation:

We have,

Initial speed of the car, u = 0 m/s

Final speed of the car, v = 72 km/h = 20 m/s

Time taken, t = 10s

Therefore,

Acceleration, $\sf{a=\frac{v-u}{t}}$

$\implies{\sf{a=\frac{20-0}{10}}}$

$\implies{\sf{a=\cancel{\frac{20}{10}}}}$

$\implies{\boxed{\sf{a=2\: ms^{-2}}}}$

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