MK.U1.L1. Introduction to Forces

What is a Force?

• The distance
• Mass
• A push or pull
• Give me a  failing grade 

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The force that pulls objects towards Earth.

• Gravity
• Friction
• Inertia
• Force

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A force that results from two objects rubbing past each other.

• Gravity
• Friction
• Inertia
• Force

 What is the unit called that measures force?

• Isaac
• Yee
• Newton
• kilogram

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The scientist who is most famous his work on forces

• Albert Einstein

• Stephen Hawking

• Sir Isaac Newton

• Galileo Galilei

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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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Which of the following is a contact force?

• Magnetic

• Friction

• Electrical

• Gravitational

What will cause an object to move?

• Applied forces
• Balanced forces
• Unbalanced forces

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What is a contact force.

• A force that can only exert force on an object that it is touching.

• A force that acts through an invisible force field and doesn't touch the object.

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

• Gravity

• Buoyancy

• Air resistance

• Friction

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