Unit E Review Part 2

Fill in the blank: Objects fall at the same rate if ________ is minimized.

• air resistance

• gravity

• mass

• friction

According to Newton's Second Law, what happens to acceleration if mass increases while force remains constant?

• Acceleration increases

• Acceleration decreases

• Acceleration stays the same

• Acceleration becomes zero

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Friction is a force that ______ motion and helps stop moving objects like bikes.

• opposes

• supports

• creates

• increases

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NGSS.MS-PS2-1

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Fill in the blank: ________ energy converts to kinetic energy as an object moves.

• Potential

• Thermal

• Sound

• Electrical

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Fill in the blank: Contact forces involve _________?

• touching

• hearing

• seeing

• smelling

Which of the following are examples of non-contact forces?

• Gravity and magnetism

• Friction and tension

• Pushing and pulling

• Compression and tension

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True or False: Gravity is a contact force.

• True

• False

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What does this graph represent?

• Constant speed
• Acceleration
• Not moving
• Turning around

The forces acting on the object that is represented by this graph must be ____________.

• in motion

• in balance

• unbalanced

• added together

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NGSS.MS-PS2-2

Without gravity we would________. 

• Float away
• Stay in the ground
• Nothing would happen.
• I don't know

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