Question

A car accelerates at the rate of 5 m/s2 .Find the increase in the velocity of the car in 2second. Find the velocity of the car after two seconds if it starts from rest.

Answer 1

$\huge\boxed{ \mathbb\red{❥A} \green{n} \mathbb\blue{S} \purple{w} \mathbb \orange{E} \pink{r}} \:</p><p>$

▪️The increase in velocity is 10 m/s.

▪️The question only asks for “increase” or “change” in velocity and has nothing to do with initial velocity, final velocity, distance covered, etc.

▪️Acceleration is “change of velocity over time”. So, simply

$∆v = a•t$

$∆v = 5 m/s^2 • 2 s = 10 m/s.$

▪️The increase in velocity is 10 m/s.

▪️The only assumption is that the stated rate of acceleration is applied “uniformly” during the total 2-second interval.

Hopes it help you✌️✌️