Forces

What is force in physics?

• A power in star wars

• A push or pull on an object

• A stop on an object

• The start of an object

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What can force do to an object?

• Accelerate an object

• Slow down an object

• Have the object remain in place

• Have the object change shape

• All of the above

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What is the measure of force?

• Newtons

• Light years

• Inches

• Gallons

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What is the unit for FORCE?

• N (Newtons)

• lbs (pounds)

• g (grams)

• m/s (meters per second)

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If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

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What force holds the planets in motion around the sun?

• Magnetic
• Electrical
• Gravitational
• Air Resistance

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Jupiter has about 317 times more mass than Earth. What can you infer from this fact? 

• That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
• That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
• That Jupiter’s and Earth’s gravitational forces are equal.
• Mass has no effect on the gravitational force between two objects

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This type of force resist motion between two surfaces that are pressed together

• contact
• gravity
• friction

What type of force was at work in the parachute?

• elastic spring force

• frictional force (air resistance)

• magnetic force

• gravitational force

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• Balanced
• Unbalanced

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