Question

A TRUCK STARTS FROM REST AND ROLLS down a hill with constant acceleration.it travels a distance of 400 m in 20 seconds.find its acceleration

Answer 1

Acceleration = velocity/time
A=400/20
A=20m/s2

Answer 2

The truck starts from rest, so initial velocity = 0

Distance travelled = 400 m

Time taken = 20 s

We know the equation of motion, S = ut + ½ at2

400 = 0 + ½ a * (20)2

a = 2 m/s2





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