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A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car. A. 3.5 m/s^2 B. 5.7 m/s^2 C. 20 m/s^2 D. 70 m/s^2
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4 votes
A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

A. 3.5 m/s^2

B. 5.7 m/s^2

C. 20 m/s^2

D. 70 m/s^2

User Andrey Egorov
by
8.1k points

2 Answers

4 votes

The answer is 5.7 m/s^2

User Play
by
8.3k points
3 votes
We know, acceleration = change in velocity / Time
a = 20 - 0 / 3.5
a = 20 / 3.5
a = 5.7 m/s2

In short, Your Answer would be Option B

Hope this helps!
User Space Cowboy
by
8.1k points
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