MOUSETRAP CAR

NEWTONS FIRST LAW

• It states that an object in motion
• Tends to stay in motion unless
• Acted upon by an unbalanced force
• Our car stopped mostly due to
• Friction.

NEWTONS SECOND LAW

• States that F=ma, which
• Means from our data we can
• Find the force if we multiply
• The mass against the acceleration.

NEWTONS THIRD LAW

• States that for every reaction,
• There is an equal and opposite
• Reaction. In our car this is shown
• By the mouse trap transferring
• The energy to the wheels.

OUR GOAL

• To make a functional car go as far as it can
• Using only simple materials

MATERIALS:

• Mousetrap
• Wood plank
• Coat hanger and string
• Cd's
• Wooden and metal axel

MATERIALS:

• Straw to put axel in
• Small plastic wheel
• Eye hooks

WE HAD 3 DESIGNS WITH PROS AND CONS

TWO WHEEL DESIGN

• Pros- big wheels, light
• Cons- might turn, stick might hit ground
• Cons- we have no records

THREE WHEEL DESIGN

• Pros- light, longest pull arm
• Pros- weight going forward
• Cons- will probably turn

FOUR WHEEL DESIGN

• Pros- will go fairly straight
• Cons-heaviest option
• Cons- we need 4 CDs

WE CUT OUR PLANK OF WOOD

• We cut it so it was lighter
• Also to fit the trap and wheels
• This was very important to the car

WE STARTED TO PUT THE TRAP TOGETHER

WE ONLY GOT 6 FEET ON OUR FIRST TEST

WE MADE MANY CHANGES

• We put tape over the CDs for traction
• We put two tiny wheels in the front for balance
• Putting tape on the axle for grip also helped

FINAL DESIGN

• We decided to cut the base to remove weight
• A coat hanger was used as a swing arm
• We also turned the front axel so it went straight
• Changing the string helped greatly

WE GOT 36 FEET ON OUR FINAL TEST