Question

Pleeeeease help

A car accelerates uniformly at 3m/s covering 70m in 5 seconds,calculate the initial and final velocities​

Answer 1

Initial velocity = 6.5 m/s

Final velocity = 21.5 m/s

Step-by-step explanation:

Acceleration = a = 3m/s²

Distance = s = 70m

Time = t = 5s

Initial velocity = u

Final velocity = v

s=ut+(1/2)at²

70=u(5)+(1/2)(3)(5²)

70=5u+37.5

5u=70-37.5

5u=32.5

u=6.5m/s

v=u+at

v=6.5+(3)(5)

v=6.5+15

v=21.5m/s