Force and Motion

Front

What happens to gravitational attraction between two objects as their distance from each other increases?

Back

The gravitational attraction decreases.

Tags

NGSS.MS-PS2-4

Front

What is a substance applied to a surface to reduce friction between two objects called?

Back

Lubricants.

Front

What is the force of attraction between objects due to their masses?

Back

Gravity.

Tags

NGSS.MS-PS2-4

Front

What is the term for the speed of an object in a particular direction?

Back

Velocity.

Front

What is the S.I. unit for force?

Back

Newton.

Front

What is inertia?

Back

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

Front

What is friction?

Back

A force that opposes the motion of two surfaces in contact.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

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 formula for calculating force?

Back

Force = mass × acceleration (F = ma).

Tags

NGSS.MS-PS2-2