The video introduces the concept of forces, distinguishing them from fictional portrayals like in Star Wars. It covers types of forces, including contact and non-contact forces, and key physics vocabulary such as force, mass, acceleration, and net force. The video explains net force with examples and calculations, and provides problem-solving exercises to apply these concepts.

Which of the following is an example of a contact force?

• Magnetism

• Electricity

• Friction

• Gravity

What is the unit of force in the metric system?

• Kilogram

• Newton

• Joule

• Meter per second squared

Which symbol is used to represent mass in physics?

• F

• A

• M

• N

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Acceleration is defined as the rate at which an object's _____ is changing.

• Direction

• Speed

• Force

• Mass

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What does the term 'net force' refer to?

• The force due to gravity

• The total force acting on an object

• The force applied by a single object

• The force due to friction

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In the example with the cat and the box, what force opposes the cat's push?

• Electricity

• Friction

• Magnetism

• Gravity

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How do you calculate the net force on an object?

• Multiply the forces

• Add all the forces together

• Divide the applied force by the opposing force

• Subtract the opposing force from the applied force

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If a man pushes a box with 220 newtons and three bears push back with 80 newtons each, what is the net force on the box?

• 20 newtons to the right

• 20 newtons to the left

• 220 newtons to the left

• 240 newtons to the right

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In the spacewalk example, which direction will Ryan Reynolds be pushed?

• Directly to his left

• At a 45-degree angle

• Straight down

• Down and to the left

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In the tug-of-war example, which team wins if the net force is 3 newtons to the left?

• Team Blue

• Neither team

• Team Red

• Both teams

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