Question

A bus starting from rest attained an acceleration of 2m/s^2. Find the velocity of the bus at the end of 20s. Full explanation please.

Answer 1

Answer:

40 m/s

Explanation:

Initial velocity of bus (u) = 0 ( as it started from rest)

Acceleration (a) = 2 m/$s^2$

Time ( t ) = 20 s

Let the velocity of bus after 20 s = v m/s

As per the 1st equation of uniformly accelerated motion-

v = u + at

or v = 0 + 2 × 20 m/s

Therefore, v = 40 m/s.

Hope you find this helpful. Please rate this answer!

Answer 2

Answer:

40m/s

Explanation:

Given here, initial velocity u = 0

acceleration=2m/s^2

time =20 seconds

so we have to find the final velocity after 20seconds

so,

according to the equation of motion

v= u +at

v= 0 + 2*20

v=40m/s