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Science Lab Report- Does the Surface and Type of Ball affect how high a Ball Bounces?

DOES THE SURFACE AND TYPE OF BALL AFFECT HOW HIGH A BALL BOUNCES?

Aim-

To determine if the surface and type of ball affects how high a ball bounces.

Hypothesis-

My hypothesis was that both balls would bounce higher on the harder surfaces because the harder surfaces would reflect the impact of the ball instead of absorbing it.

Materials-

  • 1x Measuring Tape
  • 1x Bouncy Ball
  • 1x Tennis Ball
  • Flat Surfaces including Concrete, Wood and Carpet (all next to a wall so it’s easier to measure).

Method-

PART A- BOUNCY BALL:

  • Take the measuring tape and bouncy ball to the concrete surface.
  • Bounce the bouncy ball on the concrete surface next to a wall.
  • Use the measuring tape to measure how high the ball has bounced.
  • Take the bouncy ball to the carpet.
  • Bounce the ball on the carpet, next to a wall or table leg.
  • Use the measuring tape to measure how high the ball has bounced.
  • Take the bouncy ball to the wooden surface.
  • Bounce the ball next to a wall or table leg.
  • Use the measuring tape to measure how high the ball has bounced.

PART B- TENNIS BALL:

  • Take the tennis ball to the concrete surface.
  • Bounce the ball on the concrete surface next to a wall.
  • Use the measuring tape to measure how high the ball has bounced.
  • Take the tennis ball to the carpet.
  • Bounce the ball next to a wall or table leg.
  • Use the measuring tape to measure how high the ball has bounced.
  • Take the tennis ball to the wooden surface.
  • Bounce the ball next to a wall or table leg.
  • Use the measuring tape to measure how high the ball has bounced.

Results-

Type of Ball Tennis Ball Poly-PG Ball (Bouncy Ball)
Surface A (Wood) 44cm 60.4cm
Surface B (Carpet) 40.3cm 55cm
Surface C (Concrete) 49cm 62cm
AVERAGE 44.43cm 59.13cm

Each time the balls were bounced the bouncy ball bounced higher than the tennis ball. The tennis balls average, which was 44.43cm, was approximately 15cm lower than the bouncy balls average, which was 59.13cm.

Discussion-

I got the results that I did because I bounced each ball with the same amount of force each time and bounced them in the same spots, always making sure that it was a flat surface. I also used the same two balls each time. The bouncy ball also bounced higher than the tennis ball because the bouncy ball was more elastic, which means it bounced back quicker. A way that you can tell how elastic a ball is, is by squeezing it and seeing how quickly it comes back, this is like bouncing it and seeing how quickly it bounces back off the ground. The reason that both balls bounced the highest on the wooden surface and the concrete surface was because the surfaces reflected the balls more instead of absorbing the impact, like the carpet did.

Conclusion-

The conclusion is that both balls bounced the highest on the concrete surface and that the bouncy ball bounced higher than the tennis ball on each surface.

Bibliography-

  • Louis. A. Bloomfield. (2004) Bouncing Balls Homepage.

Available from: <http://www.howeverythingworks.org/bouncing_balls.html>.

[9th June 2011]




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