Physical Science Unit 3.1-3.3 Motion and Forces Semester Review

Front

Define Instantaneous Speed

Back

Speed at any given point in time.

Front

What is a net force?

Back

When two or more forces act on an object at the same time.

Front

What is the difference between distance and displacement?

Back

Distance is how far an object has moved, while displacement is the distance and direction of an object's change in position.

Front

What type of friction occurs when an object moves through a fluid?

Back

Fluid friction.

Front

Calculate the speed: Juan won a 300 meter race in 40 seconds. What is his speed?

Back

7.5 m/s.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

Define Velocity.

Back

Velocity is the speed of an object in a given direction.

Front

What is the difference between scalar and vector quantities?

Back

Scalar quantities have magnitude only, while vector quantities have both magnitude and direction.

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the object's motion.

Front

What is the effect of unbalanced forces on an object?

Back

Unbalanced forces cause a change in the object's motion.