1) Backspin of a ping pong
2) Topspin of a ping pong
3) Best Shooting position of the basketball when shooting
4) Investigate on how the position of the racket effects incoming ball
5) Building a telescope
6) Potato battery
7) How to make a motor and how does a motor work
8) How does a parachute works
We then choose 1 of 8 topics that we think is the best and came up with variables and a hypothesis for the experiment. So here is the table that we made.
Name
|
Question
|
Independent variable
|
Dependent variable
|
Controlled variable
|
Hypothesis
|
Ho Jia wei
|
Investigate of angles that can accurately rebound a table tennis ball
|
- Angle of the racket
- Position of the racquet
|
- Whether the ball can go over the net
|
- Position of ball machine
- Height of racquet
|
There is a 3D angle at every position that can accurately rebound an incoming table tennis ball.
|
Benjamin
|
What is the best size for a parachute to work effectively with a weight of 5kg
|
Size of parachute
|
- If the parachute works effectively
|
- Material
- Weight used
- Wind conditions
- Height
- Shape of parachute
|
- The bigger the parachute the better it works.
|
Darie Chan
|
Investigate the best Shooting position of your hands for the basket basketball when shooting
|
Shooting position of your hand
|
- Did the ball go in the hoop
|
Basketball
Distance from the hoop
|
The highest shooting position of the basketball would have better results
|
Kenneth Kiang
|
Investigate on how the tilting of the racquet affects the backspin motion of a ping pong ball
|
- Tilting of the racquet
|
- Parabola of the trajectory of the ping pong ball
|
- Racquet used
- Velocity of ping pong ball
- Type of ping pong ball
- Spin of ping pong ball
|
The more a flat racquet is tilted, the lesser hang time the ping pong ball will have.
|
