**NEWTON'S LAWS & MOUSETRAP CAR**

NEWTON'S

first

LAW

HYPOTHESIS:

- According to Newton's first law we think that the car will decrease in speed when it goes on the unbalanced surface (carpet) because of the force

Newton's

first

law (continued)

PROCEDURE:

1. Went to media center hallway

2. Wound the back axle backwards

3. Released the car on tile

4. The car reached the carpet

5. The car slowed down

6. The car came to a stop

NEWTON'S

FIRST

LAW (CONTINUED)

DATA:

NEWTON'S

FIRST

LAW (CONTINUED)

RESULTS:

NEWTON'S

FIRST

LAW (CONTINUED)

CONCLUSION:

Our hypothesis was supported because the car went slower when it reached the carpet from the tile.

The experiment proves Newton's first law because the car was in motion with the same speed and direction, until it was acted upon by an unbalanced force (carpet), which made the car slow down.

NEWTON'S

SECOND

LAW

HYPOTHESIS:

- We think that the car will go slower with the phone on it because the acceleration depends on the mass. We think the cars mass will increase with adding a phone to it.

NEWTON'S

SECOND

LAW (CONTINUED)

PROCEDURE:

1. Go to the small gym

2. Wound the back axle backwards

3. Put phone on the car

4. Released the car on gym floor

5. Car went slower than usual

NEWTON'S

SECOND

LAW (CONTINUED)

DATA:

NEWTON'S

SECOND

LAW (CONTINUED)

RESULTS:

Our hypothesis was supported because the he car went slower when weight was added to it.

NEWTON'S

SECOND

LAW (CONTINUED)

CONCLUSION:

The experiment proves Newton's second law because when we added more mass to the car the car went slower.

Independent: mass of object

Dependent: acceleration

Independent: unbalanced force

Dependent: motion

NEWTON'S

THIRD

LAW

HYPOTHESIS:

- According to Newton's third law we think that if we set the car with a force going backward then there will be a foreword force that is equal to the backward force.

Independent: resistance

Dependent: speed

NEWTON'S

THIRD

LAW (CONTINUED)

Procedure:

1. Wound the axle back

2. Lever pulls the string foreword

3. The car has a balanced force

NEWTON'S

THIRD

LAW (CONTINUED)

DATA:

NEWTON'S

THIRD

LAW (CONTINUED)

RESULTS:

Our hypothesis was not supported because the car had opposite but not equal forces.

NEWTON'S

THIRD

LAW (CONTINUED)

CONCLUSION:

The experiment does not prove Newton's third law because it shows that the paired forces are opposite but not equal to each other.

**by: Sabrina and Arnel**

Normal speed on tile

Speed decreasing because of unbalanced force (carpet)

(CONTINUED)

(CONTINUED)

(CONTINUED)

NEWTON'S

FIRST

LAW

Newton's first law states that an object in motion stays in motion with the same speed unless acted upon by an unbalanced force.

NEWTON'S

SECOND

LAW

Newton's second law states that the greater the mass of the object, the greater the amount of force is needed.

Before phone was added (normal speed)

After phone was added

NEWTON'S

THIRD

LAW

Newton's third law states that for every action there is an equal and opposite re-action.

axle winds back

lever pulls forew0rd

This is a systematic error because that is how the car was made.