Question

A runner starts a race and in 1.25s has a velocity of 5.0m/s [E]. Determine the acceleration of the runner

Answer 1

Answer:

4m/s^2

Explanation:

initial velocity = 0m/s

final velocity = 5m/s

time = 1.25s

by first equation of motion,

v= u+ at

let the acceleration be a

5 = 1.25 a

a = 5/1.25 = 500/125 = 4

a = 4m/s^2