Problem 7.43 Your car produces about 36 kW of power to maintain a constant speed

Question

Problem 7.43 Your car produces about 36 kW of power to maintain a constant speed of 34 m/s on the highway. e3hgt session.masteringphysics.com Part A What average force does the engine exert? Submitted Answers Express your answer to two significant figures and inclu ANSWER 1: 10601 1000 N The unit you entered is not recognized. Did you mean 'N'? Submit My Answers Give Up ANSWER 2: Deduction:-10% 0 Incorrect; Try Again; 3 attempts remaining | | | 106 Enter your answer using dimensions of force. ANSWER 3: Deduction:-10% 1060 N Not quite. Check through your calculations; you may have made a rounding error or used the wrong number of significant figures. ANSWER 4: Deduction:-10% 1000 N Return to Current Item

Explanation / Answer

P = F.v

36 x 10^3 W = F (34 )

F = 1059 N

Conevrting in two significant digit,

F = 1.1 x 10^3 N Or 1.1 kN Or 1100 N

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