Question

A bus is moving with a velocity 90 km/h. If the bus covers a distance of 625 m before coming to rest, calculate the retardation of the bus.

Answer 1

Explanation:

Speed in m/sec. = 90 × 5 / 18 = 25 m/sec.

Using Newton's 3rd law of motion

v^2 - u^2 = 2as

-25^2 = 2 × 625 × a

625 / 2 × 625 = a

a = 1/2

Answer 2

Answer:

0.5m/s2...............................