Forces (7.1)
Types of Forces (7.1)
Newton's First Law of Motion (7.2)
Newton's Second Law of Motion (7.2)
Newton's Third Law of Motion (7.2)
100

What is a force?

A push or a pull on an object.

100

What is an unbalanced force?

When the net force acting on an object is not 0N, the forces are unbalanced forces.

100

What is Newton's first law of motion?

Newton's first law of motion states that if the net force acting on an object is zero, the motion of the object does not change.

100

What is Newton's second law?

Newton's second law of motion is acceleration, mass, and force.

100

What is Newton's third law?

For every action there is a reaction.
(Action-Reaction)

200

What is a contact force?

A push or a pull applied from one object to another.

200

What is a balanced force?

A balanced force is when the net force on an object is zero newtons, the forces acting on the object are balanced.

200

What is inertia?

Inertia is the tendency of an object to resist a change in motion.

200

What is acceleration?

The rate at which an object's velocity changes over time.
200

What is a force pair?

A force pair is when two objects exert forces on each other, the two forces are a force pair.

300

What is a non-contact force?

A push or a pull applied by one object to another object that is not touching it.

300

What are the three forces of a contact force?

Applied force, Elastic force, and Normal force.

300

What is constant speed?

An object moving at the same speed for a same period of time.

300
Your skateboard begins to slow down when you roll off the sidewalk and across the gravel. What is at work?

 Friction

300

What is an action force?

When two objects apply forces on eachother, one of the forces is called an action force, and the other is called the reaction force. (Action-Reaction)

400

What is friction?

Friction is a contact force that resists the sliding motion between two objects that are touching.

400

What are the three noncontact forces?

Electric force, Magnetic force, and Gravity.

400

What is velocity?

Velocity is speed in a given time.

400

A 24N net force acts on an 8kg rock, what is the acceleration of the rock?

24N/8KG=3

400

What is action-reaction?

For every action, there is an equal and opposite reaction.

500
Adam and Natalie push a cart using 150N of force. The cart does not move. What is the static friction on the cart?

-150N

500
As the distance between two objects increases, what happens to the gravitational force?

The force decreases

500

If one force on an object is 5N upward and the other force is 10N downward, what is the objects motion?

5N Downward.

500

What is the mathematical equation for Newton's second law of motion? -Albert

Acceleration = Net force/mass

500

If the force of the man's head on the ball is 1.5N upwards, what is the force of the ball on the man's head?

It would be 1.5N downwards.

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