Unit Review: Forces and Motion

Front

What is the universal law of gravitation?

Back

Every point mass attracts every other point mass by a force pointing along the line intersecting both points.

Tags

NGSS.MS-PS2-4

Front

What is gravitational force?

Back

The attractive force between two objects due to their mass.

Tags

NGSS.MS-PS2-4

Front

What is net force?

Back

The vector sum of all the forces acting on an object.

Tags

NGSS.MS-PS2-2

Front

How do you determine the direction of net force?

Back

The direction of net force is the same as the direction of the acceleration of the object.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = ma).

Tags

NGSS.MS-PS2-2

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is motion?

Back

An object is in motion if its position changes relative to a reference point.

Tags

NGSS.MS-PS2-2

Front

What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Tags

NGSS.MS-PS2-3

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet produces a constant magnetic field, while an electromagnet can be turned on and off.

Front

What is acceleration?

Back

The rate of change of velocity of an object.

Tags

NGSS.MS-PS2-2