# The work W0 accelerates a car from 0 to 50 km/h. (a) Is the work required to accelerate the car from 50 km/h to 150 km/h equal to 2W0, 3W0, 8W0, or 9W0? (b) Choose the best explanation from among

The work W0 accelerates a car from 0 to 50 km/h.

(a) Is the work required to accelerate the car from 50 km/h to 150 km/h equal to 2W0, 3W0, 8W0, or 9W0?

(b) Choose the best explanation from among the following:

I. The work to accelerate the car depends on the speed squared.

II. The final speed is three times the speed that was produced by the work W0.

III. The increase in speed from 50 km/h to 150 km/h is twice the increase in speed from 0 to 50 km/h.

(a) Is the work required to accelerate the car from 50 km/h to 150 km/h equal to 2W0, 3W0, 8W0, or 9W0?

(b) Choose the best explanation from among the following:

I. The work to accelerate the car depends on the speed squared.

II. The final speed is three times the speed that was produced by the work W0.

III. The increase in speed from 50 km/h to 150 km/h is twice the increase in speed from 0 to 50 km/h.

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**7**- Work and Kinetic EnergySection: Section 7.1

Problem: 22

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