Recent content by stephanna

  1. S

    Kenetric Energys, verolcity and mass of a falling object?

    At t = 0 a rubber ball of mass m is dropped from a height of 10 m. (i) When does it reach the ground? How fast is it moving when it hits the ground? Each time it bounces, the ball looses 20% of its energy. (ii) Calculate the height it reaches on the 1st bounce, and the time at which it hits...
  2. S

    How long does a ball with a mass m take to hit the ground?

    I have genuanly attempted this and have been working on it over and over for a number of hours with our any progression, I would apprechate any advice
  3. S

    How long does a ball with a mass m take to hit the ground?

    Homework Statement At t = 0 a rubber ball of mass m is dropped from a height of 10 m. (i) When does it reach the ground? How fast is it moving when it hits the ground? Each time it bounces, the ball looses 20% of its energy. (ii) Calculate the height it reaches on the 1st bounce, and the...