1. We know the following of Newton’s equations of motion:
vf = vi + at
2) d = vit + (½)at2
3) vf = vi + 2a(d)
For each of the problems to follow, write down all known and unknown quantities. Then select which equation you will use.

2. Example 1 Let’s apply this and solve for acceleration.
A bike starts off at rest, then accelerates to a speed of 6 m/s over a distance of 30 m.
What is the acceleration of the bike?

3. Example 2
An airplane takes off. It accelerates down the runway at 4 m/s2 for 30 seconds, then lifts off the ground.
What is the distance traveled before takeoff?

4. Example 3a
Suppose a train starts from rest (v = 0) and accelerates east at 0.5 m/s2.
What will the train’s velocity be after 2 minutes?
v = 0 t = 0
v = ?
t = 120 s
0.5 m/s2

5. Example 3b
Consider the previous example. What will the displacement of the car be after 2 minutes?
a = 0.5 m/s2
X=??????

6. Example 4: The Dragster Imagine a drag race down a straight track.
The racer can generate a constant acceleration of 50 m/s2.
If it starts at rest, what will its velocity be after 5 s, and how far will it have traveled from its starting point?