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=2asv^2 - u^2 = 2asv2−u2=2as
When 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.
Practise AQA GCSE Physics Forces and motion with exam-style questions for Foundation and Higher tier. 83 questions covering Describing motion along a line, Forces, accelerations and Newton's Laws of motion, and Forces and braking, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.