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3 years ago

6

A car starts from rest and after 7 seconds it is moving at 42 m/s. What is the car’s average acceleration? A. 0.17 m/s2 B. 1.67

m/s2 C. 6 m/s2 D. 7 m/s2 E. none of the above

2 answers:

aliya0001 [1]3 years ago

5 0

Acceleration =velocity /time
=42/7
=6

tamaranim1 [39]3 years ago

4 0

C. 6 m/s2 is correct

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Explanation:

We can answer this problem by applying Newton's second law, which states that:

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The equation can be rewritten as

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In this problem, the initial acceleration is

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