PHYS U3 FLASHCARD REVIEW (Kinematics)

Front

What is velocity?

Back

Velocity is a vector quantity that refers to the rate at which an object changes its position, including both speed and direction.

Front

What happens to acceleration if an object's velocity is constant?

Back

If an object's velocity is not changing, its acceleration is zero.

Front

What is a reference frame in motion?

Back

A reference frame is a point or object that you compare or measure all motion from.

Front

Is it true that there is no gravity in space?

Back

FALSE. Gravity exists in space, although it may be weaker than on Earth.

Front

What defines a vector quantity?

Back

A vector quantity has both magnitude (number) and direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity includes both speed and direction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, which can be due to changes in speed or direction.

Front

What is the formula for calculating average velocity?

Back

Average velocity is calculated as the total displacement divided by the total time taken.

Front

What is the significance of a negative acceleration?

Back

Negative acceleration indicates that an object is slowing down or decelerating.

Front

How does gravity affect motion in a vacuum?

Back

In a vacuum, all objects fall at the same rate due to gravity, regardless of their mass.