2 braking times?

1. Sep 15, 2004

phipps66

Ok i have this problem and i have having trouble with it. It reads:

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

i am confused as which is the initial time and the acceleration to use. i am lost, physics is my worst

2. Sep 15, 2004

phipps66

ok i figured out the first part of 1.5m/s as how fast the car is going at the end of the braking period. i just can't figure out the distance

3. Sep 15, 2004

NateTG

What formulas do you have?

4. Sep 15, 2004

phipps66

the kinematic equations'

5. Sep 15, 2004

NateTG

Can you figure out the distance that is traveled while the car is accelerating (before braking)?