Problema Solution
A train accelerates from 30km/h to 45km/h in 15s find its acceleration in m/s^2
Answer provided by our tutors
Acceleration, a, is the amount by which your velocity changes in a given amount of time.
vi = 30 km/h
vi = 30*10^3/(60*60) m/s
vf = 45 km/h
vf = 45*10^3/(60*60) m/s
t = 15 s
a = (vf - vi)/t
a = (45*10^3/(60*60) - 30*10^3/(60*60))/15
a = 0.28 m/s^2