Review ~ Forces and Motion

What are the 2 categories of force?

• Magnitude and direction

• mass and acceleration

• Speed and direction

• contact and non-contact

In the end, what caused the sailing stones to move?

• Aliens

• Strong winds

• Ice

• Friction

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What is an example of a contact force?

• Hitting a ball with baseball bat

• Gravity

• Magnetism

• Ball flying in the air

Friction opposes the ___ between ___

• Gravity; planets

• distance; objects

• movement; surfaces

• heat; objects

Which of the following are types of friction?

• Static

• Buoyant

• Fluid

• Stationary

Sky diving exemplifies

• Contact force

• Non-contact force

• Magnetism

• Static Friction

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Which requires more force to life?

• Pencil

• Apple

• Eraser

• Bowling ball

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Net force is the ___ of all the forces acting on an object.

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Jimmy is pushing the sofa to the right while Timmy is pulling the sofa to the right. To find the net force you ___ the forces.

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Hunter (left) is pulling the toy to the left, while Melissa (right) is pulling to the toy to the right. To find the net force on the you ___ the forces.

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