Calculating Acceleration - Section 9.2 Quiz

A car traveling at +60 km/h crashes into a brick wall. How would a driver's steering wheel airbag help to save the driver's life?
1. It would reduce the magnitude of negative acceleration on the driver's body
2. It would increase the magnitude of negative acceleration on the driver's body
3. It would reduce the magnitude of negative acceleration on the car
4. It would ensure the driver's body experiences zero negative acceleration.
The following graph depicts the motion of a sprinter.

When did the sprinter experience maximum acceleration?
1. between 45 s and 60 s
2. between 0 s and 30 s
3. between 30 s and 45 s
4. between 0 s and 60 s
The following graph depicts the motion of a sprinter.

What is the acceleration of the sprinter between 0 s and 30 s?
1. + 0.33 m/s²
2. - 0.33 m/s²
3. + 3.0 m/s²
4. - 3.0 m/s²
A volleyball rolls toward a gymnasium wall at +3.0 m/s. The ball bounces off the wall and moves away from the wall at -2.0 m/s. If the ball was in contact with the wall for a period of 0.25 s, what was the acceleration of the ball while in contact in the wall?
1. - 20 m/s²
2. + 20 m/s²
3. - 4.0 m/s²
4. + 4.0 m/s²
The following velocity-time graph depicts the motion of a vehicle.

During what part of the motion was the vehicle not moving?
1. 100 s to 200 s
2. 0 s to 100 s
3. 200 s to 400 s
4. 400 s to 600 s
The following velocity-time graph depicts the motion of a vehicle.

During what part of the motion was the vehicle traveling with constant positive velocity?
1. 400 s to 600 s
2. 100 s to 200 s
3. 0 s to 100 s
4. 200 s to 400 s
The following velocity-time graph depicts the motion of a vehicle.

During what part of the motion was the vehicle experiencing negative acceleration?
1. 0 s to 100 s
2. 400 s to 600 s
3. 100 s to 200 s
4. 200 s to 400 s
A cheetah glimpses a tasty gazelle and chases it, accelerating from rest at a rate of 1.0 m/s² for 25 seconds. How fast is it going at the end of the 25 seconds?
1. 25 m/s
2. 26 m/s
3. 0.40 m/s
4. 100 m/s
The following graph depicts the motion of an object.

Which of the following statements concerning the object's motion is true?
1. The object is experiencing negative acceleration
2. The object is experiencing constant velocity
3. The object is farthest from the starting at time "x"
4. The object does not change direction
Ignoring the effects of air friction, and assuming that the acceleration due to gravity is -9.80 m/s², what would be the final velocity of a object that is dropped off a bridge and falls for 5.0 s?
1. -49 m/s
2. +20 m/s
3. -20 m/s
4. +49 m/s