Lesson Review: Motion

Multiple Choice

Objects are said to be moving when ____.

• they change position relative to a reference point

• they are stopped

• they are weightless

Multiple Choice

What is the speed of a bird that can fly 50 meters in 10 seconds?

(Speed = distance / time)

• 40 m/s

• 60 m/s

• 5 m/s

• 500 m/s

Match

Match the following

• 40 km/h west

• 40 km/h

• S = d/t

tells the velocity

tells the speed

formula for finding the speed of an object

• tells the velocity

• tells the speed

• formula for finding the speed of an object

Multiple Choice

Which object on the graph is

moving at the fastest speed?

• Object A

• Object B

• Object C

Multiple Choice

Which object on the graph stopped between 30 and 40 seconds?

• Object A

• Object B

• Object C

Multiple Select

Which line segment(s) on this graph shows positive acceleration (speeding up)? 2 answers

• O-A

• B-C

• D-E

• C-D

• A-B

Multiple Select

Which line segment(s) on this graph shows negative acceleration (slowing down)?

• O-A

• B-C

• D-E

• C-D

• A-B

Multiple Select

Segments A-B and E-F show which of the following?

• The bus has stopped to pick up passengers.

• The bus is moving at a constant speed (not accelerating or decelerating).

Multiple Choice

What is inertia?

• a measure of time

• how fast something falls

• resisting a change in motion

Multiple Choice

According to Newton's 1st law, WHY should you wear a seatbelt everytime that you get into a car?

• So that you can feel gravity when you fall down

• So if the car stops suddenly, you will not keep going and hit the dashboard or seat due to inertia.

• So that aire resistance can stop you

Multiple Choice

Which cart has more inrtia (resistance to change in its motion)?

• The empty shopping cart

• The full shopping cart

• They will take the same amount of force

Multiple Choice

If the man pushes with an equal amount of force, which object will accelerate more?

• Car because it has more mass

• Lawnmower because it has less mass

• Car because it has less mass

• Lawnmower because it has more mass

Multiple Choice

A force of 90N is applied to each cart below, which one will accelerate the fastest?

• Cart 1

• Cart 2

• Cart 3 

• Cart 4

Multiple Choice

According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail

• a. creates a friction with the hammer.

• b. disappears into the wood.

• c. exerts an equal and opposite force on the hammer.

• d. moves at a constant speed.

Multiple Choice

When a person pushes against the ground with their foot, the equal and opposite reaction force is

• when they start to move forward

• the ground pushing back on their foot

Multiple Choice

The picture is an example of Newton's...

• 1st Law

• 2nd Law

• 3rd Law

Multiple Choice

What law is best described by inertia?

• 1st

• 2nd

• 3rd

Multiple Choice

Acceleration is due to a force put on an objects mass. (F= m x a)

• 1st Law

• 2nd Law

• 3rd Law

Multiple Choice

The picture is an example of Newton's...

• 1st Law

• 2nd Law

• 3rd Law

Multiple Choice

"An object in motion (or at rest) will to stay in motion (or at rest) until an outside force acts upon it."

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Multiple Choice

Force = Mass x Acceleration

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Multiple Choice

Newton's 3rd law says that for every action, there is an ______ reaction.

• unequal & opposite

• equal & similar

• equal & opposite

• stronger & opposite