Quiz /Test #3 College class Uniform Accelerated Motion Period Date Name
Show work, follow GUESS method, do calculations, write symbols and units of each quantity.
Formulas needed:
a = Vf- Vi ; t= Vf- Vi ; d= ½ (Vf +Vi)* t ; Vf= Vi + a *t
T a

1. A shuttle bus slows down from 20.0 m/s to a complete stop. It takes 5 seconds for the bus to slow down. Find its acceleration.
Givens:

Unknowns:

Equation:

Substitute:

Solve:

2. When Heather applies the brakes of her car, the car slows uniformly from 15.0 m/s to 0.0 m/s in 2.50 s. How many meters before a stop sign she must step on the brakes in order to stop at the sign?
Givens:

Unknowns:

Equation:

Substitute:

Solve:

3. A car starts from rest and travels for 5.0 s with a constant acceleration of −1.5 m/s2.
a. What is the final velocity of the car?
Givens:

Unknowns:

Equation:

Substitute:

Solve: