Question

If a train going 80 m/min hits the

brakes, and it takes the train 2.5
seconds to stop, what is the
train's acceleration?

Answer 1

-0.53 m/s²

Step-by-step explanation:

Acceleration is the change in velocity over change in time.

a = Δv / Δt

First, convert m/min to m/s.

80 m/min × (1 min / 60 s) = 1.33 m/s

a = (0 m/s − 1.33 m/s) / 2.5 s

a = -0.53 m/s²