Graph

	Feather	Quarter
In.>10	Sec.>0.8	0.4
20	1	0.6
30	1.7	0.8

Resources

http://www.doestimeexist.info/what_is_motion.htm
http://en.wikipedia.org/wiki/Motion_%28physics%29
http://www.qrg.northwestern.edu/projects/vss/docs/space-environment/1-what-is-gravity.html
http://theory.caltech.edu/people/patricia/gravtop.html
http://en.wikipedia.org/wiki/Feather
http://en.wikipedia.org/wiki/Quarter_(United_States_coin)

Problem

Can quarter and feather fall at the same speed?

What is Motion?

In physics, motion means a continuous change in the location of a body. Change in motion is the result of applied force. Motion is typically described in terms of velocity, acceleration, displacement, and time. An object's momentum is directly related to the object's mass and velocity, and is conserved within a system, as described by the law of conservation of momentum.

Everything in the universe is moving. As there is no absolute reference system, absolute motion cannot be determined and only motion relative to a point of reference can be determined; this is emphasized by the term relative motion.

What is Gravity?

Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the Universe. Sir Isaac Newton (1642 -- 1727) discovered that a force is required to change the speed or direction of movement of an object. He also realized that the force called "gravity" must make an apple fall from a tree, or humans and animals live on the surface of our spinning planet without being flung off. Furthermore, he deduced that gravity forces exist between all objects.

Materials

The follow things, we used . . . .

• Feather

• Quarter


• Ruler

• Stopwatch

Hypothesis

We think the quarter and the feather won't fall at the same speed because the quarter's mass is greater than the feather's mass, so the quarter drops faster.