Question

a bus starting from rest and attains the velocity 20m/s in 5s..calculate it's acceleration...​

Answer 1

Answer:

Given, initial velocity (u) = 0 m/s

final velocity (v) = 20 m/s

time (t) = 5 s

We know Acceleration (a) = Displacement/Time taken = v-u/t = 20 - 0/5 = 20/5 = 4 m/s²

Answer 2

The car traveled 50 m while accelerating from 0 to 20 m/s in 5 seconds.

The distance d is from

d = v(avg) • t

where v(avg) is the average velocity during the time, or

v(avg) = v(initial) + ∆v/2.

Here v(initial) is 0 and ∆v is 20 m/s, so

v(avg) = 20 m/s / 2 = 10 m/s.

d = 10 m/s • 5 s = 50 m.

hope it will help u