David conducted gravity trials to compare how objects with different masses are affected by gravity. He dropped a soccer ball, baseball, and rubber ball from a height of 100cm and timed how long it took each to fall. The soccer ball took 1.36 seconds, the baseball 0.55 seconds, and the rubber ball 1.03 seconds. David concluded that the bigger the mass of an object, the more gravity affects it, as the baseball with the smallest mass fell the fastest.

1. By David Neil Gravity Trials

2. Explaining Gravity Trials I am trying to find out how gravity effects mass. What I’m going to do is compare objects with different masses. I am going to time the object when I drop it, measure the height I dropped it from, and divide distance and time.

3. Trial 1! 1 st Trial I’m going to take to take a soccer ball and drop it The height was 100 cm. The time was 1.36 seconds. The speed was 73 cm per second.

4. Trial 2! The 2 nd Trial I used a baseball and dropped it from 100cm. The time was .55 seconds. The speed was 155 cm per second.

5. Trial 3! The 3 rd Trial I am going to use a rubber ball. The height is 100cm. The time was 1.03 seconds. The speed was 116 cm per second.

6. Conclusion The bigger the mass the more gravity takes effect on the object.

7. This is my Flip Video! Enjoy!

8. My project presentation is finished! The End

9. Resources Book: Force and Motion www.Wikipedia.com www.ask.com

10. Other Facts About Gravity When certain stars stop shining it eventually collapses. If a star is three times bigger than the sun when it collapses it will form a object called a black hole. Black holes have the strongest pull of gravity. Its so strong that even light, the fastest thing in the universe, can not escape.