Recent content by jhaywood

  1. J

    Help on motion and pressure needed

    v2= u2+ 2ad v2-u2=2ad v2-u2/2 = ad v2-u2/2d= a? (i don't think that's correct I am not sure)
  2. J

    Help on motion and pressure needed

    72% full it is 37,425.6 litres height is (51980 / 1000) / 7.1 = 7.3 (i'm not sure if i am doing this right) i know that pressure= force/area and that density = mass/volume i just don't know how to apply it to the problem
  3. J

    Help on motion and pressure needed

    1. A train accelerates from rest at a constant rate and reaches a velocity of 153 kmh in a distance of 2.29 km. Calculate the acceleration and time taken. If the breaks are then applied and produce a constant deceleration bringing the train to rest in a time of 140s, calculate the rate of...
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