Question

A snowmobile has an initial velocity of +3.9 m/s.
If it accelerates at the rate of +0.69 m/s2 for 4.0 s, what is the final velocity?
Answer in units of m/s

Answer 1

Acceleration = (final velocity - initial velocity)/time taken
0.69 = (final v-3.9)/4.0
final v - 3.9 = 2.76
final v = 6.66 m/s

Answer 2

or you can draw a velocity-time graph.