Question

A car starts from rest and travels for 5.0 seconds with uniform acceleration of 1.5 m/s^2. The driver then applies the brakes, causing a uniform acceleration of 2.0 m/s^2 in the negative direction. If the brakes are applied for 3.0 seconds, how fast is the car going at the end of the braking period, and how far has it gone?

Answer 1

v = a t used for both acceleration and deceleration will give velocities.

s = (1/2) a t^2 will give distances travelled for both periods of acceleration and decleration.

Answer 2

Thank you so much!