Question

An athelete takes 2.0s to reach his maximum speed of 18.0km/h.What is the magnitude of his average acceleration?

Answer 1

t=2 sec v=18km/hr. u=0
v=u+at
18=0+2a
a=18/2=9km/hr^2

Answer 2

Answer:

Explanation:

V=18 and u=0, t=2sec.

V=u+at

18=0+a2