A72 kg sled is pulled forward from rest by a snowmobile and accelerates at 2 m/s squared forward for five seconds. the force of friction acting on the sled is 120 n backwards. the total mass of the snowmobile and driver is 450 kg. the drag force acting on the snowmobile is 540 n backwards. what is the tension in the rope.

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc