First slide

Rectilinear Motion

Question

A car accelerates from rest to 30m/s in 5S . What is its acceleration

Easy

A

$1 m / s^{2}$
B

$3 m / s^{2}$
C

$5 m / s^{2}$
D

$6 m / s^{2}$

Solution

Initial velocity $u = 0$
Final velocity $V = 30 m / s$
Time taken $t = 5 S$
$∴$ acceleration $a = \frac{V - 4}{t} = \frac{30 - 0}{5}$
$= 6 m / s^{2}$

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