1. Motion Unit Miss McDonald Science 8
Acceleration
Motion Unit
Miss McDonald
Science 8

2. What is acceleration? change in velocity time The of an object
over a period of
change in velocity
time

3. What is the formula for acceleration?
change in velocity
time

4. Acceleration = change in velocity/ time
Example
What is the acceleration of a car that can go from 0 mph to 60 mph in 5 seconds?
Acceleration = change in velocity/ time
A = 60 – 0/ 5
A= 12 mph/s

5. Acceleration = change in velocity/ time
Practice
A roller coaster is traveling with a speed of 15 m/s at the top of a hill. Two seconds later as it travels down the hill it has a velocity of 25 m/s. What is the acceleration?
Acceleration = change in velocity/ time
A = 25 – 15/ 2
A= 5 m/s/s