Question Detail

PHY 101 Work, Energy and Power Objective Question
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Question

In Example 11, what is the average power produced by the car?
Options
A 1.7 kW
B 1.3 kW
Correct Answer
C 2.7 kW
D 2.3 kW
Correct Answer

Option B is the correct answer.

Detailed Explanation

Average power = work done / time = change in kinetic energy / time = (½ × 400 kg × (20 m/s)²) / 60 s = (200 × 400) / 60 = 80000 / 60 ≈ 1333 W = 1.33 kW.

Hint

The work done is the gain in kinetic energy.

Question Info

Course: PHY 101
Topic: Work, Energy and Power
Type: Objective
Difficulty: Not specified
Question 417 of 1250
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