Newton's First and Second Law Review

This image shows us ...

• A balanced force

• An unbalanced force

• Newtons of force

• An unequal force

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What is the net force in this image?

• 50 N

• 200 N

• 1.7 N

• 125 N

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Which direction will the soccer ball move?

• To the right

• To the left

• Straight up

• It won't move

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Objects at rest remain at rest and objects traveling at a steady rate in a straight line continue that way until a _________acts on them.  

• force

• velocity

• inertia

• acceleration 

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An object in motion tends to stay in motion unless an ___ force acts on it.

• unbalanced

• balanced

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Why is the net force 0 in the image?

• Because the elephants are the same size

• Because they are both pulling the same amount of force in opposite directions

• Because they are elephants

• Because they are pulling away from each other.

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A car has a mass of 100 kg and accelerates at a rate of 4 m/s/s. What is the Force exerted on the car?

• 25 N

• 100 N

• 250 N

• 400 N

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The tendency of an object to resist a change in its state of motion is called the object's ______.

• incline

• straight line

• friction 

• inertia 

What kind(s) of objects have inertia?

• all objects with mass

• only objects at rest

• only objects in motion

• only objects whose motion is being changed

What is Newton's First Law

• F=ma

• Every action has an equal and opposite reaction

• An object at rest stays at rest, an object in motion stays in motion. 

• Friction