Recent content by Mglafas

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    Normal distribution head-scratcher

    Homework Statement A study investigates the performance of students in an exam, which is known to follow a normal distribution, with a mean of 63 and a standard deviation of 21. What is the probability that the difference between two randomly selected students is more than 5 marks...
  2. M

    Projectile motion - have i done this correctly?

    I'm unsure whether I have done the following problem correctly :) Homework Statement A ball is kicked at from the slope as shown. When will the ball hit the slope? http://img90.imageshack.us/img90/8084/slopevi0.th.jpg Homework Equations The distance traveled can be expressed...
  3. M

    Constant Acceleration of car over distance

    I'm trying to do the following problem: A car can accelerate and brake with constant acceleration, both with the magnitude (a). The car has a maximum velocity (v). The car needs to cover the distance (L), starting and ending at rest. a) How long will it take the car to cover the distance...