Inertia: Newton's First Law of Motion

Balanced or unbalanced?

• balanced
• unbalanced

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Which type of force(s) will cause a change in an object's motion?

• gravity
• zero net force
• balanced forces
• unbalanced forces

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If an object is not moving the forces acting upon it are _____________

• unbalanced
• weak
• balanced
• Hulk Smash!

An object needs a balanced force for the object to move. 

• True
• False

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What is the name for a push or pull?

• A movement
• A force
• Speed
• Density

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The law of inertia (Newton’s First Law) applies

• to both moving and nonmoving objects
• only to moving objects
• only to objects that are not moving

Because of inertia (Newton's First Law), a resting object will remain at ________.

• rest
• a constant speed
• school
• inertia 

A car runs into a wall. What will happen to the people in the car?

• They will be pushed backwards by the force of the wall.

• They will be thrown forward because of the force of the car.

• They will keep moving forward until they hit their seatbelt or the dashboard.

• They will be pushed in all directions equally.

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According to Newton’s First Law of Motion, a moving object will _______ unless acted upon by another force.

• remain in motion

• eventually come to a stop

• change its momentum

• accelerate

Without a force to stop or slow a moving object, the object will move forever in a ______ line. 

• downward

• upward

• straight
• curved