Two identical motors, each rated at 2kW, pull separate trolleys on the same track.
(i) Trolley A moves at a constant speed of 4m/s.
(ii) Trolley B moves at a constant speed of 2m/s.
(a) Calculate the pulling force on Trolley A.
(b) Calculate the pulling force on Trolley B.
(c) Which trolley experiences the greater force and by what factor?