Test Review 2

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.

Front

What does a speed of 40 mph to 60 mph indicate?

Back

This indicates acceleration, as the object is increasing its speed.

Front

What does a flat line on a distance/time graph represent?

Back

A flat line indicates that the object is not moving.

Front

What does a slanted line going down towards the x-axis on a distance/time graph represent?

Back

It represents that the object is coming back to the start.

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 is a vector quantity that includes both speed and direction.

Front

What is a scalar quantity?

Back

A scalar quantity is a physical quantity that has magnitude only and no direction, such as speed.

Front

What is a vector quantity?

Back

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

Front

What does it mean for an object to be speeding up?

Back

An object is speeding up when its velocity is increasing over time.

Front

What is the formula for acceleration?

Back

Acceleration = (Final Velocity - Initial Velocity) / Time.

Front

If a car goes from 0 to 60 mph in 4.1 seconds, what is its acceleration?

Back

Acceleration = (60 mph - 0 mph) / 4.1 s = 14.63 mph/s.