Forces (Contact and Non-Contact)

Forces

Contact Forces

Contact forces are forces that require direct physical contact between two objects.

Examples of contact forces includes:

friction, tension, and air resistance

Non-Contact

Non-contact forces are forces that act on an object without the need for physical contact.

Examples of non-contact forces includes:

gravity, magnetism, and electric forces.

Magnetic Force

When a magnet is brought near an object it will be attracted(pulled) or repelled (pushed)

Multiple Choice

When a magnet is brought near an object it will be attracted(___________) or repelled (pushed)

• pulled

• pushed

• puch

• pul

Multiple Choice

When a magnet is brought near an object it will be attracted(pulled) or repelled (_____________)

• pushed

• pulled

• pull

• puch

Gravity

An object is pulled towards another object with a larger mass.

Multiple Choice

An object is _______________towards another _______________ with a _______________.

• pulled, objects, larger mass

• pushed, objects, larger mass.

• pulled, object, small mass

• pushed, human, larger mass

​Air Resistance

As an object travels through the air the air pushes on it.

Multiple Choice

As an object travels through the _________the air pushes on it.

• air

• sky

• road

• water

Friction

As an object moves across a surface a force pushed in the opposite direction that the  object is moving.

Multiple Choice

As an object moves across a surface a ___________in the opposite direction that the object is moving.

• Force pulled

• Force pushed

• Force repelled

​Electrical (Electrostatic)

Two charged objects will attract(pull) or repel (push) when brought near each other.

Multiple Choice

Two charged objects will attract(________)

or repel (__________) when brought near each other.

• pull/push

• push/pull

• pull/pull

• push/push

Applied

An object is pushed or pulled by another object or person.

Multiple Choice

An object is_______ or _______ by another object or person.

• pushed/pulled

• pulled/move

• pushed/pushed

​Normal

An object is pushed on by a stable (not moving) object.

Multiple Choice

An object is pushed on by a __________ (not moving) object.

• stable

• moving

• bigger

Multiple Choice

Kicking a ball

• Non-contact

• Contact

Multiple Choice

A magnet pulling a coin

• Non-contact

• Contact

Multiple Choice

The balloon you just rubbed through your hair makes your hair stand up.

• Non-contact

• Contact

Multiple Choice

Throwing a ball

• Non-contact

• Contact

Multiple Choice

Dropping an orange

• Non-contact

• Contact

Multiple Choice

Pushing a swing

• Non-contact

• Contact

Multiple Choice

What force is pulling on you right now?

• Air resistance

• Gravity