Review for PTMS Quiz PS.8 a and PS.8b

​Quiz Review

Use this lesson to review for your quiz (PTMS Quiz PS.8 a and PS.8b). Please review the answer explanations to deepen your understanding.
Learning Targets:

• apply the concepts of speed, velocity, and acceleration when describing motion

• apply mathematical and computational thinking to calculate and analyze speed, velocity, and acceleration

• analyze and interpret data in graphs related to motion

• identify situations that illustrate each of Newton’s laws of motion

• apply an understanding of scientific principles and laws to describe and predict motion

​Speed

Definition:
the distance an object travels per unit of time
SI Unit:
m/s
km/h
Formula:
speed = distance ÷ time

Multiple Choice

Cameron is preparing for a race. His goal is run likes to walk 30 meters in 10 seconds.

Would his speed be?

• 3 m/s

• 10 m/s

• 300 m/s

• 0.3 m/s

Fill in the Blanks

​Acceleration

Definition:
the rate at which velocity changes over time
SI Unit:
m/s²
km/h²
Formula:

Multiple Choice

A roller coasters accelerates from an initial velocity of of 0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• -17.5 m/s²

• 18 m/s²
• 17.5 m/s²

• 16.5 m/s²

Multiple Choice

Match the description to the graph:

"The car is stopped."

Multiple Choice

Match the description to the graph:

"The car is traveling at a constant speed away from starting position."

Multiple Choice

Match the description to the graph:

"The car is returning to start."

Multiple Choice

Match the description to the graph:

"The car is decelerating."

Multiple Choice

Which is faster?

• walking

• skating

• biking

Mass

• total amount of matter, or "stuff," in an object

• remains constant regardless of location

Weight

• the force of gravity on an object

• can change depending on the gravitational field the object is in

Multiple Choice

An astronaut would weigh less on on the Moon than on the Earth because . . .

• the Moon has a much weaker gravitational pull

• the Moon has a much greater gravitational pull

Force = mass x acceleration

​Law of Inertia

Action - Reaction

Match

Match the SI unit to the measurement

• force

• mass

• acceleration

N

kg

m/s²

• N

• kg

• m/s²

Match

Match the law to its description

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Law of Inertia

F = m x a

Equal and Opposite Action - Reaction

• Law of Inertia

• F = m x a

• Equal and Opposite Action - Reaction

Multiple Choice

A 300 kg object accelerates at a rate of 4 m/s². What force is required to produce this acceleration?

Select the equation to solve the word problem.

• F = 300 × 4

• m = F ÷ 4

• a = F ÷ 300

Multiple Choice

As the fuel in the rocket ignites, the force of the gas expansion and explosion pushes out the bottom of the rocket and pushes the rocket upwards.

• 1st Law

  (Law of Inertia)

• 2nd law

  (F = ma)

• 3rd Law

  (Equal & Opposite Action/Reaction)

Multiple Choice

After you start up your dirt bike, as you give it more gas, it goes faster.

• 1st Law

  (Law of Inertia)

• 2nd law

  (F = ma)

• 3rd Law

  (Equal & Opposite Action/Reaction)

Multiple Choice

When you are standing up in a subway train, and the train suddenly stops, your body continues to go forward.

• 1st Law

  (Law of Inertia)

• 2nd law

  (F = ma)

• 3rd Law

  (Equal & Opposite Action/Reaction)

​Quiz Time!

Please take your quiz: PTMS Quiz PS.8 a and PS.8b

Learning Targets:

• apply the concepts of speed, velocity, and acceleration when describing motion

• apply mathematical and computational thinking to calculate and analyze speed, velocity, and acceleration

• analyze and interpret data in graphs related to motion

• identify situations that illustrate each of Newton’s laws of motion

• apply an understanding of scientific principles and laws to describe and predict motion