2 years ago

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]2 years ago

8 0

2 m/s. 6+8/2+5 = 14/7 = 2

Zina [86]2 years 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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