Acceleration Review

In each of the following cases, determine where the car has no acceleration?

• A car speeds up after a stoplight turns green.

• A car slows down as it approaches a red light

• A car with the cruise control set at 80 km/h going down a straight highway

• A car turning a curve at a constant speed

The standard unit for acceleration is...

• m/s

• km/hr

• m/s²

• mph

A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s in 4 seconds.  What is its acceleration?

• 16 m/s 

• 18 m/s² 

• 16 m/s²

• 24 m/s²

A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

• 2.2 m/s²

• 7.0 m/s²

• 5.7 m/s²

• 70 m/s²

What is the acceleration due to gravity on Earth?

• 3.4 m/s²

• 15.9 m/s²

• 8.9 m/s²

• 9.8 m/s²

What is the acceleration due to gravity on the Moon?

• 24.57 m/s²

• 1.62 m/s²

• 10.7 m/s²

• 9.6 m/s²

Part 1/4 : A ball is dropped from a building and hits the ground 2.3 seconds later. What is the initial velocity of the ball?

• 22.54 m/s

• 0 m/s

• 4.26 m/s

• 9.8 m/s

Part 2/4 : A ball is dropped from a building and hits the ground 2.3 seconds later. What is the final velocity of the ball?

• 22.54 m/s

• 0 m/s

• 4.26 m/s

• 9.8 m/s

Part 3/4 : A ball is dropped from a building and hits the ground 2.3 seconds later. The final velocity is 22.54m/s. What is the average velocity?

• 22.54 m/s

• 51.84 m/s

• 11.27 m/s

• 45.08 m/s

Part 4/4 : A ball is dropped from a building and hits the ground 2.3 seconds later. The average velocity is 11.27 m/s. What is the height of the building?

• 11.27 m

• 25.92 m/s

• 4.9 m

• 25.92 m