Question

A bus starts from rest and attains a speed of 36km per hrs in 10 minutes.Find acceleration

Answer 1

Answer:

We would first arrange the given information in a proper manner.

Explanation:

Here,

u = 0 km/hr (Body being at rest)

v = 36 km/hr

t = 10 min = 10/60 = 1/6 hr

Now, We know that

Acceleration = (v-u)/t

= 36/1/6

= 36 × 6

= 216 km/hr

Now, We know km/hr = 5/18 m/s

216 km/hr = 5/18 × 216

= 60 m/s

Hence, Acceleration of bus = 60 m/s

Answer 2

Answer:

0.016 m /s^2.

Explanation:

Body was initially at rest, where its velocity was 0.

     After 10 minutes, its velocity is found to be 36 km / hr, that's :

   36 x 5 / 18 m / s = 2 x 5 m / s = 10 m / s.

Final velocity is 10 m / s.

    Time taken ( in sec ) to reach at this velocity is 10 min = 10 x 60 sec = 600 sec.

Thus,

Acceleration is ( 10 - 0 ) / 600 m /s^2

           ⇒ 10 / 600 m / s^2

           ⇒ 0.016 m / s^2