Force and Motion

Force that opposes the motion of any object

• inertia

• unbalanced force

• friction

• balanced force

An object's motion will not change unless an unbalanced force acts on it.

• mass

• friction

• law of inertia

• unbalanced forces

Tags

NGSS.MS-PS2-2

Factor that determines the inertia of an object

• mass

• gravity

• friction

• inertia

Tags

NGSS.MS-PS2-2

Type of force needed to overcome inertia of an object

• friction

• balanced force

• unbalanced force

• net force

Tags

NGSS.MS-PS2-2

Tendency of an object to resist a change in motion

• friction

• inertia

• mass

• speed

The speed of an object changes only when it is acted on by

• a balanced force

• an unbalanced force

• acceleration

• friction

Tags

NGSS.MS-PS2-2

If an object is at rest, what will keep it at rest?

• friction

• inertia

• unbalanced force

• mass

Tags

NGSS.MS-PS2-2

If an equal force acts on each of the following objects, which will have the GREATEST acceleration?

• golf ball

• soccer ball

• football

• baseball

Tags

NGSS.MS-PS2-2

Inertia explains why

• friction can be overcome for all objects

• people in a car move forward in their seats when the car stops quickly

• the ground pushes against your feet when you run

• gravitational forces are stronger on Earth than on the Moon

Tags

NGSS.MS-PS2-2

In which situation are the forces operating on an object unbalanced?

• A stack of books rests on a table.

• A car has a constant motion of 60 miles per hour.

• Two sides of a balance both support 20 kg.

• A baseball falls at a faster and faster speed.

Tags

NGSS.MS-PS2-2