Acceleration Pre-Knowledge Quiz

The Velocity versus Time graph above represents the motion of a toy car.
Which of the following represents the Speed versus Time graph of the toy car?

• 

  A

• 

  B

• 

  C

• 

  D

The drawing shows the motion diagram of a car that has been photographed at equal time intervals. The dot represents the position of the front of the car.
The description that could describe the motion of the car is:

• The car is moving to the left, first speeding up and then slowing down.

• The car is moving to the right, first speeding up and then slowing down.

• The car is moving to the right and slowing down.

• The car is moving to the right and speeding up.

The drawing shows the motion of a car that has been photographed at equal time intervals. Assume that the car is moving toward the right.
The Position versus Time graph that could match the motion of the car is:

What is the average velocity of the car between 2.5 s and 7.5 s?

• 1.0 m/s

• 2.0 m/s

• 3.0 m/s

• 4.0 m/s

The Position versus Time graph of a car is shown at the left:
What do you need to do to determine the instantaneous velocity of the car at 5 s?

• Draw a tangent line at 5 s and calculate the slope of the line.

• Draw a secant line between 0 seconds and 10 seconds and calculate the slope of the line.

• Draw a secant line between 0 seconds and 10 seconds, calculate the slope and divide it by 2.

• Read the position value that corresponds to 5 s and divide it by 5.