Answer to Question #264850 in Mechanics | Relativity for minh1106

Question

A motorbike goes uphill from point A to point B and down to point C takes 32.5(seconds). Know that during the movement of the car, the wind continuously creates a thrust of 1.4N. The coefficient of friction between the wheel and the road surface is constantly changing and decreasing as a function of μ=0.05e^(-0.05t), t in seconds. If the initial speed of the car at A is 2.5 times the speed of the car at B and 1.5 times the speed at C and the distance AC=158m, the angle of inclination between AB and the road surface at C is 30°, then the distance AB must be long. How many meters at least?

Answer 1

$AB≥ 344~m.$