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True [87]
1 year ago
14

A car travels 6 m north for 2 seconds and 8 m south for 5 seconds. What is the car's

Physics
2 answers:
Degger [83]1 year ago
8 0
2 m/s. 6+8/2+5 = 14/7 = 2
Zina [86]1 year ago
5 0

Answer:

  (b)  0.29 m/s

Explanation:

The average speed is found by dividing the net displacement by the amount of time it took to achieve that displacement.

__

The net displacement is ...

  6 m -8 m = -2 m . . . . . where north is positive

The total time is ...

  2 s + 5 s = 7 s

Then the distance per unit time (speed) is ...

  (2 m)/(7 s) = 2/7 m/s ≈ 0.29 m/s

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