Unit 7 Flashcard Review - Speed, Velocity, & Acceleration

Front

What is speed?

Back

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

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction. It includes both the magnitude (speed) and the direction of motion.

Front

How do you calculate speed?

Back

Speed = Distance / Time.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can occur due to a change in speed or direction.

Front

What is the difference between speed and velocity?

Back

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

Front

If Kira jogs 72 m in 36 s, what is her average speed?

Back

2 m/s.

Front

What two measurements are necessary to calculate speed?

Back

Distance and time.

Front

When a car goes around a corner at a constant speed, why is it considered to be accelerating?

Back

Because it is changing direction.

Front

What is a scalar quantity?

Back

A scalar quantity is a physical quantity that has only magnitude, such as speed or distance.

Front

What is a vector quantity?

Back

A vector quantity is a physical quantity that has both magnitude and direction, such as velocity or acceleration.