Question

A student runs a 400m race around the school track in 65 seconds. At the start of the race, the student accelerates to a speed of 6.0m/s during the first 2.2 seconds. Calculate the magnitude of their acceleration, assuming it is constant.

Answer 1

2.7 m/s²

Step-by-step explanation:

Average acceleration is change in velocity over change in time. Assuming the acceleration is constant, we can say it is equal to the average:

a = Δv / Δt

a = (6.0 m/s - 0 m/s) / 2.2 s

a ≈ 2.7 m/s²