Force and Motion Unit Review

Front

What is speed?

Back

Speed is the distance traveled per unit of time, typically measured in meters per second (m/s) or miles per hour (mph).

Tags

NGSS.MS-PS3-1

Front

How do you calculate speed?

Back

Speed = Distance / Time. For example, if a jet plane travels 528 meters in 4 seconds, its speed is 528 m / 4 s = 132 m/s.

Tags

NGSS.MS-PS3-1

Front

What is constant motion?

Back

Constant motion occurs when an object moves at a steady speed in a straight line without changing direction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It occurs when an object speeds up, slows down, or changes direction.

Tags

NGSS.MS-PS2-2

Front

What are balanced forces?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What are unbalanced forces?

Back

Unbalanced forces are not equal and can cause an object to start moving, stop moving, or change direction.

Tags

NGSS.MS-PS2-2

Front

What is net force?

Back

Net force is the overall force acting on an object after all the individual forces are combined.

Tags

NGSS.MS-PS2-2

Front

What does a net force of 0 N indicate?

Back

A net force of 0 N indicates that the object is either at rest or moving at a constant velocity.

Tags

NGSS.MS-PS2-2

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help lift or lower objects with less effort.

Front

How does an inclined plane reduce effort?

Back

An inclined plane reduces the amount of effort needed to lift a load by spreading the work over a longer distance.