1. Fair Test of the FRICTION OF Balls on a ramp Aim PredictionMethod Results Conclusion

2. Aim To see which ball has more friction on a ramp. To see which ball has more friction on a ramp.

3. Prediction Jiyong Table tennis ball Jiyong Table tennis ball Evan Mini tennis ball Evan Mini tennis ball

4. Variables Slope of the ramp Slope of the ramp Size Size weight weight grip grip type of the ball type of the ball Degrees Degrees

5. Equipment Ramp Stopwatch/Shos’ watch Bench Balls ; tennis ball, basketball, table tennis ball, rugby ball, squash ball, cricket ball, netball, golf ball and mini tennis ball.

6. Method Step 1 Get a ramp and many different balls i.e. table tennis ball and rugby ball etc. Step 1 Get a ramp and many different balls i.e. table tennis ball and rugby ball etc. Step 2 Get a stop watch Step 2 Get a stop watch Step 3 Set the ramp up against a bench on a 50 degree angle. Step 3 Set the ramp up against a bench on a 50 degree angle. Step 4 Put the first ball on the top then let it go and time how long it takes to reach the bottom. Step 4 Put the first ball on the top then let it go and time how long it takes to reach the bottom.

7. Method 2 Step 5 Do it again and see what time it is with the same ball and if it is a different time then average out the time. Step 5 Do it again and see what time it is with the same ball and if it is a different time then average out the time. Step 6 Do it with other balls, we used nine Step 6 Do it with other balls, we used nine Step 7 Have and see if your prediction is right. Step 7 Have and see if your prediction is right.

8. BallsTime Rugby Ball 1.03 seconds Basketball 1.075 seconds Netball 1.13 seconds Soccer ball 1.16 seconds Little tennis ball 1.1 seconds Golf ball 1.015 seconds Tennis ball 1 1.18 seconds Cricket ball 1.24 seconds Table Tennis ball 1.30 seconds Squash ball 1.145 seconds Tennis ball 2 1.06 seconds

9. Conclusion We found out that the table tennis ball was slower which was Jiyong’s prediction so it must mean that Jiyong is a genius and the table tennis ball encounters more friction.

10. Video

11. The End Thank Philip for videoing