Average Acceleration

Acceleration is...

• The rate of change of the velocity of an object.

• A change in the position of an object over time.

• A numerical value with units.

• The study of the physical world.

What is the Formula for Average Acceleration?

• $a\cdot t-vf$

• a² + b² = c²

• $\frac{vf-vi}{\text{tf}-ti}$

• $s=\frac{d}{t}$

Constant Velocity = No Acceleration

• True

• False

As velocity increases/decreases so does acceleration.

• False

• True

A Boeing 747 aircraft has a landing speed of 72 m/s, and upon landing it is able to come to a stop in 2,000 m. Assuming constant deceleration, how long would it take for a Boeing 747 to come to a full stop?

• 14 seconds

• 28 seconds

• 56 seconds

• 72 seconds

Sam starts his motorcycle from the parking lot and drives it at 73m/s E in 4 seconds. What is his average acceleration?

• 18

• 18.25

• 18m/s^2

• 18.25m/s^2