Question

le1: A car speed increases from 40 km/hr to 60 km/hr in 5 sec. Calculate
acceleration of car:​

Answer 1

Answer:

this is the correct answer

Explanation:

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Answer 2

$\huge \fcolorbox{red}{pink}{Solution :)}$

Given ,

Initial speed = 40 km/hr

Final speed = 60 km/hr

Time = 5 sec or 5/3600 hr

We know that ,

$\large \sf \fbox{Acceleration = \frac{Change \: in \: velocity}{Time} }$

Substitute the known values , we get

$\sf \hookrightarrow Acceleration = \frac{(60 - 40) \times 3600}{5} \\ \\ \sf \hookrightarrow Acceleration = 20 \times 720 \\ \\ \sf \hookrightarrow Acceleration = 14400 \: \: m/ {s}^{2}$

Hence , the acceleration of the car is 14400 km/h²

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