Unit 3 Force and Motion VOCABULARY REVIEW (20 words)

Front

What is the force that attracts a body toward the center of the earth?

Back

Gravity is the force that attracts a body toward the center of the earth or any other physical body having mass.

Front

What term describes the speed and direction of an object?

Back

Velocity is the term that describes the speed and direction of an object.

Front

What are forces acting on an object that do not cancel each other called?

Back

Unbalanced forces are forces acting on an object that do not cancel each other, resulting in motion.

Front

How is speed defined?

Back

Speed is defined as the distance traveled divided by the time needed to travel that distance, without considering direction.

Front

What is the resistance to an object’s motion when it slides over a surface called?

Back

Sliding friction is the resistance to an object’s motion when it slides over a surface.

Front

What is the term for the rate of change of velocity?

Back

Acceleration is the term for the rate of change of velocity.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the formula for calculating force?

Back

Force is calculated using the formula: Force = Mass x Acceleration (F = ma).

Front

What is friction?

Back

Friction is the force that opposes the motion of an object when it is in contact with another surface.