A high-speed maglev test sled is being trialled on a straight, horizontal vacuum-tube track.
Suggest two physical factors (other than the sled's propulsion system itself) that could affect the total distance the sled can travel before its onboard energy storage is depleted.
The maximum acceleration of the maglev sled is 15 m/s215\text{ m/s}^215 m/s2. Calculate the time taken for the speed of the sled to increase from 10 m/s10\text{ m/s}10 m/s to 70 m/s70\text{ m/s}70 m/s at this constant maximum acceleration.
In a different run, the sled accelerates from rest (u=0 m/su = 0\text{ m/s}u=0 m/s) at a constant rate of 8.0 m/s28.0\text{ m/s}^28.0 m/s2 over a distance of 400 m400\text{ m}400 m. Calculate the final velocity of the sled. Use the equation:
v2−u2=2as v^2 - u^2 = 2as v2−u2=2asWhen travelling at its cruising speed, a steady electromagnetic drag force of 1200 N1200\text{ N}1200 N acts on the sled. Calculate the work done against this drag force when the sled travels a distance of 8.5 km8.5\text{ km}8.5 km at this speed.