Acceleration Notes

PS.8 Work, Force & Motion
FCMS 23-24

Today I will: take notes on acceleration
So that I can: apply the concept of speed, velocity and
acceleration when describing motion
I'll know I have it when: I can complete the calculations for
acceleration with 80% accuracy.

Tuesday, January 9, 2024

- The measure of the change
in velocity over a period of
time

- Acceleration can be
positive (Speed up) or
negative (Slows down).

Multiple Choice

The measure of the change in velocity over a period of time is ________.

• acceleration

• speed

• velocity

• always positive

Match

Match the following descriptions.

• acceleration is positive

• acceleration is negative

• The measure of the change in velocity over a period of time

speeding up

slowing down

acceleration

• speeding up

• slowing down

• acceleration

A = Vf - Vi

Time

Multiple Choice

When a car traveling at 30 m/s hits the gas pedal, it speeds up to 65 m/s in 3.5 sec. What is the

car’s acceleration during that time?

• 5 m/s^2

• 10 m/s^2

• 15 m/s^2

• 20 m/s^2

Multiple Choice

A dog is sleeping under a tree when it sees a squirrel run by. The dog runs 3.5 m/s in 15 seconds to chase the squirrel. What was its average rate of acceleration?

• 0.233 m/s^2
• 10 m/s^2
• 0.02 m/s^2
• 5 m/s^2

- When an object's acceleration is in

the same direction as its motion,

then the object experiences

positive acceleration and it speeds

up.

- When an object's acceleration is in

the opposite direction as its motion,

then the object experiences negative

acceleration and it slows down.

- Another word for "negative
acceleration" is deceleration.

A change in velocity will
change the acceleration.

Objects with circular motion are

always accelerating, because the

direction is constantly changing.