Question

A cyclist is riding his bike up a mountain trail. When he starts up the trail, he is going 8 m/s. As the trail gets steeper, he slows to 3 m/s in 1 minute. What is the cyclist’s acceleration?

–0.08 m/s2
0.08 m/s2
–12 m/s2
12 m/s2

Answer 1

a = (v_f − v_i)/t = (3 − 8)/60 = −5/60 = −0.0833… m/s² ≈ −0.08 m/s²

So the correct choice is −0.08 m/s².