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PIMSO 2022 - Science - Grade 9 - National Round Question 13

PIMSO Science · PIMSO 2022 - Science - Grade 9 - National Round

Question 13

A container ship left Manila Bay at 5:00 am. The following graph shows the distance it travelled during the first five seconds of the trip. The data was graphed and was found to follow the trend d=3t² where v is the distance and t is the time. Which of the following best describes its acceleration?

Question illustration

Editorial correction: d is distance; the source’s later v is a symbol typo. Use metres and seconds.
  1. Acceleration is changing at 3 m/s²
  2. Acceleration is constant at 3 m/s²
  3. Acceleration is constant at 1.5 m/s²
  4. Acceleration is constant at 6 m/s²
  5. Acceleration is constant at 1.5 m/s²