Question

A bicycle initially moving with a velocity 5.0 meter per second accelerates for 5 seconds at a rate of 2 meter per second what will be final velocity

Answer 1

v=u+at
v=5+2x5
v=5+10
v=15m/s

Answer 2

final velocity= initial velocity + acceleration x time

so answer will be= 5 + 2 x 5 
                           =15 meter per second