Question

A driver traveling at 39.2 m/s spots a cop are and

hits the break. If he is able to brake for 2.1 seconds
and he accelerates at a rate of -7.6 m/s?, what is
his final speed?

Answer 1

23.24 m/s

Step-by-step explanation:

2.1 s * (-7.6 m/s^2) = - 15.96 m/s from original speed

39.2 - 15.96 = 23.24 m/s