Question

A hockey player has an acceleration of −3.1 m/s2. How long does it take him to come to a complete stop from a speed of 13 m/s?

Answer 1

His acceleration function is -3.1
His velocity function is -3.1t + 13
set this to 0 and solve for the time t
-3.1t +13 = 0
3.1t = 13
t = 4.19s

Answer 2

Answer:4.2s

Explanation: