Bellringer #1

Front

What is average acceleration?

Back

Average acceleration is the change in velocity divided by the time over which the change occurs. It is calculated using the formula: a = (v_f - v_i) / t.

Front

How do you calculate average velocity?

Back

Average velocity is calculated by dividing the total displacement by the total time taken. The formula is: v_avg = (displacement) / (time).

Front

What is the formula for acceleration?

Back

The formula for acceleration is: a = (final velocity - initial velocity) / time.

Front

If a sprinter increases speed from 4.0 m/s to 10.0 m/s in 3.0 s, what is the average acceleration?

Back

+2.0 m/s²

Front

A runner covers 80 m east in 10 s, then 40 m west in 5.0 s. What is the average velocity for the entire trip?

Back

+2.67 m/s

Front

What does a negative average velocity indicate?

Back

A negative average velocity indicates that the object is moving in the opposite direction of the defined positive direction.

Front

If a ball moves from x = 2.0 m to x = -6.0 m in 4.0 s, what is the average velocity?

Back

-2.0 m/s

Front

What is the significance of direction in velocity?

Back

Velocity is a vector quantity, meaning it has both magnitude and direction. The direction affects the overall value of velocity.

Front

If a car moves from x = -12 m to x = 8 m in 4.0 s, what is the average velocity?

Back

+5.0 m/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.