Physics Fall Review Quiz

Which statement supports the law of conservation of energy?

• Energy can be created

• Energy can be destroyed

• Energy is made of matter

• Energy can be converted from one form to another

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What objects motion would most likely be represented by the graph?

• The movement of a football being thrown down the field.

• An airplane touching down on a runway.

• The movement of a car at the start of a race.

• A baseball pitched and then hit for a homerun.

How are speed and velocity different?

• Speed included direction.

• Speed indicates momentum.

• Velocity includes momentum.

• Velocity includes direction.

Which of the following best describes the velocity of an object?

• 70 m/s²

• 70 m west

• 70 m/s west

• 70 m/s

According to Newton't first law (law of intertia) ---

• When you drop a tennis ball it will bounce back

• when you pull a table cloth out from under dishes the dishes will stay on the table.

• When you kick a soccer ball the ball pushes back on your foot.

• when you jump off a sled it will move in the opposite direction you jump.

The greater the mass of an object,

• the easier the object starts moving.

• the greater its inertia.

• the more balanced it is.

• the more space it takes up.

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What happens when two forces act in the same direction?

• They cancel each other out.

• The stronger one prevails.

• Their strengths are added.

• Their sum divided by two is the total force.

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The force of gravity on a person or object on the surface of a planet is called

• mass.

• weight.

• terminal velocity

• free fall.

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

• creates a friction with the hammer.

• disappears into the wood.

• exerts an equal and opposite force on the hammer.

• moves at a constant speed.

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The overall force on an object after all the forces are added together is called the

• balanced force

• unbalanced force

• net force

• centripetal force

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