Question

) A car starts moving from rest with an acceleration of 5ms. Find out the time to travel 50m distance.​

Answer 1

Given:

Car has acceleration of 5 m/s².

To find:

Time taken to travel 50m ?

Solution:

Let time to travel 50 m be t :

Applying Equation of Kinematics:

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

$\implies \: 50 = 0(t) + \dfrac{1}{2} \times 5 \times {t}^{2}$

$\implies \: 50 = \dfrac{1}{2} \times 5 \times {t}^{2}$

$\implies \: {t}^{2} = 20$

$\implies \: t = \sqrt{20}$

$\implies \: t = 4.47 \: sec$

So, time required is 4.47 seconds.