Motion and Forces

Front

What is the definition of force?

Back

A force is a push or pull acting upon an object, measured in Newtons.

Tags

NGSS.HS-PS2-1

Front

What unit do we measure force in?

Back

Newtons (N)

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the Net Force?

Back

The Net Force is the total force acting on an object after all the forces are combined.

Tags

NGSS.MS-PS2-2

Front

If you push on a tree with 20 N of force and it doesn't move, what is the force the tree exerts back on you?

Back

20 N (according to Newton's Third Law of Motion).

Tags

NGSS.MS-PS2-1

Front

What is the direction of the force of gravity acting on an object?

Back

Downward, towards the center of the Earth.

Tags

NGSS.HS-PS2-4

Front

What is air resistance?

Back

Air resistance is a type of friction that acts against the motion of an object moving through the air.

Front

What happens to the Net Force if two equal forces act in opposite directions?

Back

The Net Force is zero.

Front

What is the formula for calculating Net Force?

Back

Net Force = Total Forces acting in one direction - Total Forces acting in the opposite direction.

Tags

NGSS.MS-PS2-2

Front

What is an example of balanced forces?

Back

When a book rests on a table, the force of gravity pulling it down is balanced by the normal force of the table pushing it up.