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The engine power of the car is 80kW and the resistance is 2000N Find (1) the work done by the engine in 10 seconds; (2) The distance that the car passes in 10 seconds
(1)W=Pt=80*10^3*10J=800000J
(2)v=P/F=80*10^3/2000=40m/s
s=vt=40*10=400m
The power of the engine is 80 W and the resistance is 2000 n
1. The work done by the engine in 10 seconds;
2. The distance the car passes in 10 seconds
Drive at a constant speed on a level road!
Notice that it's 80 kilowatts!
1)W=P*t=80*1000*10=800000J
2)W=F*S
800000J=2000N*S
S=400m
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