A super high-speed 12-car Italian train has a mass of 660 metric tons (660, 000kg). IT can

Question:

A super high-speed 12-car Italian train has a mass of 660 metric tons (660, 000kg). IT can exert a maximum force of 400 kN horizontally against the tracks, whereas at maximum velocity (300km/h), it exerts a force of about 150 kN. Calculate
(a) Its maximum acceleration, and
(b) Estimate the force of air resistance at top speed.