• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigating the relationship between drop height and bounce height when a ball is dropped.

Extracts from this document...


Bradley Wells – 11X2 – Mrs Readings – Physics Coursework – Monnet

Investigating the relationship between drop height and bounce height when a ball is dropped


When an object has Gravitational Potential Energy due to its raised position, it will gain Kinetic Energy if it falls. The maximum kinetic energy it can gain is equal to the potential energy it can lose.


When the ball hits the ground and then bounces back up again, the amount of potential energy the second time is not as great as from when you first started. This is because of Percentage Energy Loss and Elastic Potential Energy. The Percentage Energy Loss is the second Potential Energy divided by the first Potential energy then multiplied by one hundred.

E.g. PE²

       PE¹   x 100 = Percentage Energy Lost

Energy stored in a stretched or compressed spring is elastic potential energy. When Elastic Potential Energy occurs, sound waves, movement and little heat is made throughout the surface it hits and therefore this can also be a factor I could measure.

Another energy factor I could measure is the Energy Conversion. You can find this out by one simple equation similar to the one before.

E.g. Height 1

       Height 2   x 100 = Energy Conversion

There are also equations to work out the Potential Energy and Kinetic Energy too.


...read more.


  • Metre ruler stick
  • Ball of some type
  • Pencil and paper to record results

Plan cont.

Now with the basic outline of the plan sorted all we have

to is sort out the variable I will change during the

investigation in order to find the best results to conclude my

prediction or theory.

Here is the list of recordings I will use for the investigation:

Height (m)











We felt these would be the right amount of results and would give us a wide range of results good enough to prove and test my prediction or theory and be satisfactory enough for our targets. One more factor we had to consider is how we would make the recordings. Of course all you had to do was drop a ball from a certain height and then see how high it bounces back up again, then work out the energy factors involved, but we were faced with another problem. We had to work out, since it was a rounded tennis ball (a sphere), where we would make the recordings from. We had three options to choose from: the top of the ball, the centre of the ball or the bottom of the ball.

...read more.


You can see from the results, that there is the odd value or values out of place, due to the fact that the figure is different to what it should be. This basically means that the naked eye is not always the best option to use for this experiment. To perform this experiment with the utter most perfection, a machine or tool of some type could be used to record the exact height of both height 1 and 2 to perfection. With this you know your results are done properly and no major mistakes were made. Luckily since I had enough results, I could spot where mistakes were made in judging the height 2 of the ball and therefore you can count them as extreme values but mistakes are always going to be made by accident. Therefore there is not much we could have done to have changed this factor.

Another thing I would have liked to have done is to have tried to record the exact mass of the tennis ball, with doing this I can work out Potential and Kinetic Energy at each height and worked out the Potential Energy Loss per result. With this I could have produced more figures in my report which could have supported my prediction with more facts.

...read more.

This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Electricity and Magnetism essays

  1. The Bouncing Ball Experiment

    Obtaining Evidence: All my tests dropping the ping-pong ball from varying heights along a staircase behaved in the same way. The higher I moved up on the staircase, the higher the bounce of the ball became: Drop Height (cm) Bounce Height no.1 (cm)

  2. Investigating the Percentage Energy Loss When a Ball Bounces

    I think that the percentage of energy lost will remain approximately the same no matter what height I drop the ball from. This is because the amount of energy lost to non-useful energy such as heat and sound is proportional to the gravitational potential energy the ball has to start with.

  1. physics of the bouncing ball

    The ping-pong ball is hollow, reducing its mass and also making the pressure inside a lot higher, therefore the less its surface dents during a bounce and the more of its original energy it stores in the compressed air. Air stores and returns energy relatively efficiently during a rapid bounce, so the pressurized ball bounces higher.

  2. The Bouncing Ball Experiment

    Here is a diagram of my predicted graph: Obtaining Evidence: All my tests dropping the ping-pong ball from varying heights behaved in the same way. The higher I moved the ping-pong ball up, the higher the bounce of the ball became: Bounce Height (cm)

  1. To See if the temperature of a squash ball and the height it is ...

    I will repeat each reading 3 times. This will allow me to take an average to improve the reliability of my results. Also from previous work I know that the higher an object is above the ground the more potential energy it has. This means the higher The ball is dropped from the higher it should bounce,

  2. What Factors Affect the Bounce of a Squash Ball.

    At this point, the ball has Kinetic Energy. However, some energy is lost as due to friction between the molecules in the air, and the surface of the ball. 3 This is during the time where the ball is in contact with the floor.

  1. Investigating the factors that affect a bouncing ball.

    Percentage loss (%) 2nd Rebound PE (J) Percentage loss (%) Mighty ball 595 450.5 24.2857 340 24.53 595 450.5 24.2857 374 16.98 595 459 22.857 374 18.52 Ping-Pong 175 120 31.42857 289 +140 (gain) 175 140 20 102.5 26.79 175 120 31.42857 97.5 60.42 Squash ball 164.5 32.9 80 4.7 85.71 164.5 28.2 83.465 7.05 75 164.5

  2. Physics Coursework Gravity Investigation

    Once the strain energy causes the ball to bounce, the energy is transferred back to kinetic energy. When the ball reaches its' bounce height the kinetic energy is converted to gravitational potential energy, the balls original energy form at the release height.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work