Question

A man riding his bike had a velocity of 5 meters per second north. After 10 seconds, his velocity increased to 9 meters per second north. What was his average acceleration?

A. 0.4 meters/sec
B. 1.4 meters/2 sec
C. 40 meters/sec
D. 0.4 meters/2 sec

Answer 1

D 0.4 meters/2 second

Answer 2

4 mps increase in 10 seconds = 2 mps increase in 5 seconds = .4meters/2sec