Question

a trolley while going down an inclined plane has an acceleration of 2 cm per second square what will be its velocity 3 second after the start

Answer 1

Here, initial velocity, u = 0

Acceleration, a = 2 cm s-2

Time, t = 3 s

From, Ist equation of motion, v = u + at = 0 + 2 x 3 = 6 ms-1

Answer 2

v =6m/s.............