Question

A bus starting from rest moves with a uniform acceleration of $0.1m/s^2$ for 2 min. Find the required speed.

Answer 1

Step 1: Given data

The acceleration of the bus, a=$0.1m/s^2$.

The time traveled by the bus, t = 2min = 120 seconds.

Initial speed, u = 0.

Step 2: Finding the required speed

We know from Newton's first equation of motion,

$v=u+at$ ….(1).

Where v = final velocity of the bus, a = acceleration, “u” is initial speed and “t” is the time.

Now from equation (1),

$v=0+(0.1\times 120)=12m/s$.

Hence, the speed of the bus is $12m/s$.