Calculating Bike Rider's Acceleration

Calculating Acceleration of a Bike Rider

If a bike rider slows from 7.0m/s to 2.0m/s in 4.90s, what is the bike rider's acceleration?

Question:

If a bike rider slows from 7.0m/s to 2.0m/s in 4.90s, what is the bike rider's acceleration?

Answer:

-1.02 m/s²

Explanation:

Acceleration is change in velocity over time.

a = Δv / Δt

a = (2.0 m/s − 7.0 m/s) / (4.90 s)

a = -1.02 m/s²