Riding your bike, you can accelerate at a rate of 2m/s^2. If you start from rest, how long will it take to reach a speed of 20m/s?

Question

Riding your bike, you can accelerate at a rate of 2m/s^2. If you start from rest, how long will it take to reach a speed of 20m/s?

 

Show work (Average Speed or Acceleration)

Answer 1

A = Change in Velocity (ΔV) divided by Change in Time (ΔT)

A = 2m/s²

ΔV = 20m/s

Therefore time to reach the new speed is

 

ΔT = ΔV / A

 

ΔT = 20m/s / 2m/s2

ΔT = 10s