My science fair projectMy science fair project

Biology per.3

12/14/09

Biology per.3

12/14/09

My big question isMy big question is

My big question is does a golf ball go further than a whiffle ball when launched off a catapult.

My big question is does a golf ball go further than a whiffle ball when launched off a catapult.

Hypothesis Hypothesis

My hypothesis is that the golf ball will go further than an whiffle ball when shot off a catapult.

I think that beacause a golf ball has more mass than an whiffle ball.

My hypothesis is that the golf ball will go further than an whiffle ball when shot off a catapult.

I think that beacause a golf ball has more mass than an whiffle ball.

Interesting facts Interesting facts

An interesting fact I found is that a whiffle ball is more aerodynamic than a golf ball so it would go further .

Also I found out heavier things go down faster than a lighter than heavy stuff

An interesting fact I found is that a whiffle ball is more aerodynamic than a golf ball so it would go further .

Also I found out heavier things go down faster than a lighter than heavy stuff

MaterialsMaterials

3 peices of wood 12 in. long 8 pieces of wood 6 in. long Assorsment of screws and nails Large rubber band 2 eye hooks Glue 1 metal bar at least 6 in long Piece of poster board or cardboard

3 peices of wood 12 in. long 8 pieces of wood 6 in. long Assorsment of screws and nails Large rubber band 2 eye hooks Glue 1 metal bar at least 6 in long Piece of poster board or cardboard

AssemblyAssembly

Cut two of the 6 in. to a 45 degree angleTake a 12in. And lay it downTake 2 6 in and nail or screw it to the 12in. Make mirrored piece Connect two sides together using remaining 6in. Pieces Drill hole in arm about 1\2in. From endPut hook in 3 in front of arm\fold cardboard into a holder for the ammo

take metal bar and attach to each side in middlePut other hook on baseThen decorate

Cut two of the 6 in. to a 45 degree angleTake a 12in. And lay it downTake 2 6 in and nail or screw it to the 12in. Make mirrored piece Connect two sides together using remaining 6in. Pieces Drill hole in arm about 1\2in. From endPut hook in 3 in front of arm\fold cardboard into a holder for the ammo

take metal bar and attach to each side in middlePut other hook on baseThen decorate

Observations Observations

I noticed that the whiffle ball made it 2 in further than the whiffle ball because it was more aerodynamic than a golf ball

I noticed that the whiffle ball made it 2 in further than the whiffle ball because it was more aerodynamic than a golf ball

conclusionconclusion

Was my hypothesis right or not? My hypothesis wasn’t right because the

whiffle ball went 41in. And the golf ball went 39in. So I was wrong.

I have one question and it is would a golf ball go further than an tennis ball.

Was my hypothesis right or not? My hypothesis wasn’t right because the

whiffle ball went 41in. And the golf ball went 39in. So I was wrong.

I have one question and it is would a golf ball go further than an tennis ball.