E
ekanipion
Guest
can anyone please help me to solve this question:
The magnitude of the resistance to the motion of a motor coach is K newtons per tonne, where K is constant. The motor coach has mass 4.5 tonnes. When travelling on a straight horizontal road with the engine working at 39.6kW, the coach maintains a steady speed of 40m/s.
(a) Show that K = 220
The motor coach ascends a straight road, which is inclined at arcsin 0.3 to the horizontal, with the same power output and against the same constant resisting forces.
(b) Find in Joules to 2 significant figures the kinetic energy of the motor coach when it is travelling at its maximum speed up the slope
The magnitude of the resistance to the motion of a motor coach is K newtons per tonne, where K is constant. The motor coach has mass 4.5 tonnes. When travelling on a straight horizontal road with the engine working at 39.6kW, the coach maintains a steady speed of 40m/s.
(a) Show that K = 220
The motor coach ascends a straight road, which is inclined at arcsin 0.3 to the horizontal, with the same power output and against the same constant resisting forces.
(b) Find in Joules to 2 significant figures the kinetic energy of the motor coach when it is travelling at its maximum speed up the slope