Forces & Motion

What is Newton's First Law of Motion?

• An object at rest stays at rest, an object in motion stays in motion unless acted on by another force.

• Friction

• F=m X A

• Every action has an equal and opposite reaction

What is Newton's first law known as? The Law of

• Gravity

• Friction

• Inertia

• mass

Why does an 18-wheeler have more inertia than a bicycle?

• it has more mass

• it is not as aerodynamic

• it has more volume

Tags

NGSS.MS-PS2-2

Newton's second law of motion describes acceleration as force divied by _______

• direction

• inertia

• mass

• speed

Tags

NGSS.MS-PS2-2

The force that pulls an object in a circular motion and keeps it in a circular motion is centripetal force.

• True

• False

According to ______. the acceleration of an object is equal to the net force acting on the object divided by the object's mass.

• Newton's First law

• Newton's 2nd law

Tags

NGSS.MS-PS2-2

An object's velocity can be changed by changing its speed, its direction, or both.

• true

• false

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Newton's law states that for every action, there is an _____ reaction.

• equal and similar

• unequal and opposite

• equal and opposite

• stronger and opposite

Tags

NGSS.MS-PS2-1

Friction is a force that acts in an ____ direction of movement.

• parallel

• opposite

• west

• similar

Rougher surfaces have

• greater friction

• less friction

• the same level of friction