Question

A car start from rest at t=0 with acceleration 5m/s^2and travel distance of 30m.find time taken?

Answer 1

Explanation:

The equation that we will use is

$s = ut + \frac{1}{2} a {t}^{2}$

s=30m

u=0

a=5m/sec sq

$30 = 0 + \frac{1}{2} \times 5 \times {t}^{2}$

${t}^{2} = 12$

$t = 2 \sqrt{3} secs$

Answer 2

S=ut+½at²

S=0+½at²

30=½×5×t²

T²=12

T=√12 sec