Forces and Motion

What is a force?

• Any push or pull

• Slowing action

• Speeding up

• The amount of space an object has

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Which has more momentum?

• A kickball rolling across the flat ground

• A baseball rolling down a hill

• A soccer ball falling from a 20 story building

• A tennis ball falling from a desk

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What is air resistance?

• A type of gravity

• A type of friction

• How much space an object takes up

• How hard it is for an object to stop

What is needed to move an object with a large mass?

• A small force

• Friction

• Air Resistance

• A large force

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What is the result of reducing friction?

• It is easier for an object to stop.

• It is more difficult for an object to stop.

• It has no effect on an object.

• The mass of an object is increased.

What would make it easier to carry a large box filled with books up a hill?

• Increase the friction

• Decrease the force

• Increase the air resistance

• Decrease the mass

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NGSS.MS-PS2-2

Which would slow an object?

• Decrease the air resistance

• Decrease the mass

• Change in direction

• Decrease the friction

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NGSS.MS-PS3-5

What do you need to calculate speed?

• Mass and color of an object

• Distance and time traveled by the object

• Mass and time traveled by the object

• Position and distance of an object

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NGSS.MS-PS3-1

Why do objects fall to the ground?

• gravity

• inertia

• friction

• resistance

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If a tablecloth is pulled very quickly off a table without anything else on the table falling, what is that called?

• Gravity

• Air Resistance

• Inertia

• Friction