Unit 5.1 Forces and Magnetism (Lesson 1)

What is force?

• A movement of an object without any push or pull.

• The movement of push and pull applied on an object.

• The ability to perform work.

• The energy stored in an object.

What are the two (2) main categories of force?

• Applied force and frictional force.

• Gravitational force and magnetic force.

• Contact force and non-contact force.

• Push force and pull force.

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

• An apple falling from a tree.

• An iron nail attracted to a magnet.

• A person pushing a wooden box.

• Pieces of paper attracted to a rubbed comb.

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When is work said to be done?

• When an object is at rest.

• When a force is applied to an object, but it does not move.

• When a force is applied to an object, and it results in the movement of the object.

• When an object changes its shape without any force.

What is energy?

• The movement of push and pull applied on an object.

• The force exerted by gravity.

• The ability to perform work.

• The friction between two surfaces.