Mass and Bowling Ball

Title: The fastest object to hit the ground
Purpose: The purpose of this experiment is to determine if the weight of a certain object affects the velocity of the object when it hits the ground.
Hypothesis: If the Buick is projected in the air at the same angle as the other objects, then it will have a higher velocity compared to a tank shell, a golf ball, a baseball, a bowling ball, a football, a pumpkin, an adult human, and a piano.
Introduction: In physics, velocity is often defined as the speed. Gravity is the amount of force that acts upon an object. In this experiment, when one projects an object in the air, gravity acts upon the object causing it to come down. However, the answer that I am trying to discover is if the weight of the object affects the velocity of the object when it comes back to the surface of the earth.
Materials:
Computer
Paper
Pen
Notebook
http://phet.colorado.edu/sims/projectile-motion/projectile-motion_en.html tank shell golf ball baseball bowling ball football pumpkin an adult human piano Buick
Procedure:
1. Gather up all materials
2. Go on to http://phet.colorado.edu/sims/projectile-motion/projectile-motion_en.html
3. Put the initial speed at 18 (m/s)
4. Put the angle (degrees) at 75
5. Click on the tank shell
6. Record the mass & diameter
7. Click fire
8. Record the time (s)
9. Repeat again for the remaining objects.
10. Repeat experiment 2 more times.
Data
Trial 1:
Object
Mass (kg)
Time (s)
Tank shell
150
3.6
Golf Ball
0.046
3.6
Baseball
0.145
3.6
Bowling Ball
7.3
3.6
Football
0.41
3.6
Pumpkin
5
3.6
An Adult Human
70
3.6
Piano
400
3.6
Buick
1000
3.6

Trial 2:
Object
Mass (kg)
Time (s)
Tank shell
150
3.6
Golf Ball
0.046
3.6
Baseball
0.145
3.6
Bowling Ball
7.3
3.6
Football
0.41
3.6
Pumpkin
5
3.6
An Adult Human
70
3.6
Piano
400
3.6
Buick
1000
3.6

Trial 3:
Object
Mass (kg)
Time (s)
Tank shell
150
3.6
Golf Ball
0.046
3.6
Baseball