During the May Day holiday, Xiao Ming’s family drove out for a trip.

When a car is traveling in a straight line at a constant speed on the highway at a speed of 108 kilometers per hour, the car

1. Because the car is traveling at a constant speed, the car is affected by a balance force in the horizontal direction, that is, F traction = f resistance = 0.08X1375X10=1100N

V=108km/h=30m /S

P=FV=1100X30=33000W=33KW

2. Q put=qm=3.3X10^7X50=1.65X10^9J

Because n =W/Q

So W=nQ=1.65X10^9X40%=6.6X10^8J

And W=FS

So S=W/F =6.6X10^8/1100=6X10^5m=600km