Question

Suppose a Heel-mobile, moving in a straight line and steadily increases its speed. It moves from 15 m/s to 30 m/s the first second and from 30 m/s to 45 m/s the next second. What would be its acceleration.

Answer 1

acceleration = change in velocity/change in time  = 45-15 / 2

=30/2 = 15 m/s