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Author Question: In 20 minutes, Kara ran 2.40 km on a treadmill facing due east. Relative to the gym, what were her ... (Read 60 times)

neverstopbelieb

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  • Posts: 534
on: Jul 28, 2018
In 20 minutes, Kara ran 2.40 km on a treadmill facing due east. Relative to the gym, what were her displacement and average velocity during this time interval?
 a. 0; 0
  b. 0; 2.00 m/s
  c. 2.40 km, east; 0
  d. 2.40 km, east; 2.00 m/s, east
  e. 2.40 km, west; 2.00 m/s, west

Question 2

A car travels north at 30 m/s for one half hour. It then travels south at 40 m/s for 15 minutes. The total distance the car has traveled and its displacement are:
 a. 18 km; 18 km S.
  b. 36 km; 36 km S.
  c. 36 km; 36 km N.
  d. 90 km; 18 km N.
  e. 90 km; 36 km N.


ndhahbi

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  • Posts: 390
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

D


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