An engine can pull four coaches at a maximum speed of `20ms^-1`. The mass
Channel: Doubtnut
Date: 12/07/2020

An engine can pull four coaches at a maximum speed of `20ms^-1`. The mass of the engine is twice the mass of every coach. Assuming resistive forces to be proportional to the weight, approximate maximum speeds of the engine, when it pulls `12` and `6` coaches, are