speed/velocity and acceleration

by: ckurt
  1. 1

    What is the difference between speed and velocity?

  2. 2

    Noni walks 4 m/s south. Which of the following best describes Noni’s travel?

  3. 3

    A racecar rounds a curve on the track at a constant speed of 180 mph. Is the car accelerating?

  4. 4

    A person walks 1 mile every day for exercise, leaving her front porch at 9:00 A.M. and returning to her front porch at 9:25 A.M. What is the total displacement of her daily walk?

  5. 5

    Instantaneous speed is measured

  6. 6

    A car traveled 88 km in 1 hour, 90 km in the next 2 hours, and then 76 km in 1 hour before reaching its destination. What was the car’s average speed?

  7. 7

    A horizontal line on a distance-time graph means the object is

  8. 8

    Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 2 s. What is your acceleration?

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