Question

During the final stretch of a race, a runner increases her speed from 4.2 m/s to 9.1 m/s in 4 seconds. What is the acceleration of this runner? A = (V2 - V1 ) / t 2.3 m/s2 1.05 m/s2 3.3 m/s2 1.2m/s2

Answer 1

Explanation:

delta speed = 4.9m/s

delta time= 4sec

acceleration = 1.225 m/s ^2 (ans)