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A Car Originally at Rest Has Its Speed Increased to a Value

Question 59

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A car originally at rest has its speed increased to a value v in a period of 5 seconds. The work performed in this part of the motion is W1. Over the next 5 seconds the speed of the car is increased to 2v. In the second part of the motion the work performed is W2. It is correct to say that:


A) W1 = A car originally at rest has its speed increased to a value v in a period of 5 seconds. The work performed in this part of the motion is W<sub>1</sub>. Over the next 5 seconds the speed of the car is increased to 2v. In the second part of the motion the work performed is W<sub>2</sub>. It is correct to say that: A) W<sub>1</sub> = W<sub>2</sub>. B) W<sub>1</sub> = W<sub>2</sub>. C) W<sub>1</sub> = 2W<sub>2</sub>. D) W<sub>1</sub> = 3W<sub>2</sub>. E) W<sub>1</sub> = 4W<sub>2</sub>. W2.
B) W1 = W2.
C) W1 = 2W2.
D) W1 = 3W2.
E) W1 = 4W2.

Correct Answer:

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