Investigation 5 - Acceleration

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can refer to both increasing and decreasing velocity.

Front

How do you calculate average velocity?

Back

Average velocity (v̅) is calculated using the formula v̅ = Δx/Δt, where Δx is the change in position and Δt is the change in time.

Front

What does Δx represent in the average velocity formula?

Back

Δx represents the change in position or displacement of an object.

Front

What does Δt represent in the average velocity formula?

Back

Δt represents the change in time during which the displacement occurs.

Front

If a toy car travels 670 cm in 15 seconds, what is its average velocity?

Back

v̅ = Δx/Δt = 670 cm ÷ 15 s = 44.67 cm/s.

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 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.

Front

How do you round 23.542 to the nearest tenth?

Back

To round 23.542 to the nearest tenth, look at the hundredths place (4). Since it is less than 5, round down to 23.5.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) can be calculated using the formula a = (final velocity - initial velocity) / time.