Question

A biker goes from 15 ms -1to 0 ms -1after hitting a brick wall. Its rate of acceleration is -50ms -2 . Calculate the time taken for the bike to decelerate.

Answer 1

Answer:

Time taken t = 4.167 seconds (Approx)

Explanation:

Given:

Initial Speed u = 12 m/s

Final speed v = 0 m/s

Acceleration a = -50 m/s²

Find:

Time taken t

Computation:

v = u + at

0 = 12 + (-50)t

t = 4.167 s

Time taken t = 4.167 seconds (Approx)