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Elizabeth, Maddie, Heston, Ashley, Colby.  Newton's third law states: whenever one body exerts a force on a second body, the second body, the second.

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Presentation on theme: "Elizabeth, Maddie, Heston, Ashley, Colby.  Newton's third law states: whenever one body exerts a force on a second body, the second body, the second."— Presentation transcript:

1 Elizabeth, Maddie, Heston, Ashley, Colby

2  Newton's third law states: whenever one body exerts a force on a second body, the second body, the second body exerts an equal and opposite force on the first.  Action force and reaction force: equal forces that can't exist without the other and exist because of a force exerted on a object.  a=F/m: a formula in which it explains the accleration, which is a, of a object. Accleration equals F/m. F is both the action and the reaction forces while m is the mass of the object excelerating.

3 Arisototle's philosophies on motion were the first to be widely accepted, and remained as such for many years. Scientists such as Galileo proved his theories false and paved the way for Newton's laws of motion

4 Driving down the street Action: Tires push the road Reaction: Road pushes the tires Dropping a ball Action: Earth pulls the ball Reaction: Ball pulls the Earth

5  Question: Will the skateboard be pushed back during the action or reaction?  Hypothesis: I hypothesize that when the basketball is thrown to the person on the skateboard it will be pushed back and when the person on the skateboard throws the basketball back it will push the skateboard forward.

6  -Tape measure  -Basketball  -Marker  -Tape measure  -Skateboard

7  We are going to lay out a piece of tape on the ground and then put a piece of tape 5ft, 10ft, and 15ft from the initial piece of tape. A group member will then sit on a skate board that is lined up on the first piece of tape, another group member will go back and stand on the 5ft tape line, he/she will then throw the ball at the group member on the skate board and we will record how fall the person on the skateboard was pushed back by this action. To measure this we will use a tape measure. We will then line the skateboard back up and have the person on the skateboard throw the ball back to the person standing on the 5 ft line, and we will measure how fall he was shot backwards by the reaction. We will repeat this steps at 10ft and 15ft.

8  1- Cut the tape into 4 strips  2- Write 'start' on one.,'5ft' on one, '10ft' on one, and '15ft' on one.  3-Lay the 'start' tape on the ground at any point  4- Using the tape measure, measure 5ft from the starting point and lay down the '5ft' tape  5-Using the tape measure, measure 5 feet from the '5ft' tape and down the '10ft' tape.  6-Using the tape measure, measure 5 feet from the '10ft' tape and lay down the '15ft' tape.  7-Line the skateboard up on the 'start' tape, and have a group member sit on the skateboard  8-Have a group member stand on the 5 foot line with a basketball  9-Have the group member on the 5 foot line throw the ball to the member on the skateboard  10-Take the tape measure and measure the distance that the front wheels of the skateboard traveled from the front line.  11-Set the skateboard back on start  12-Have the member on the skateboard throw the ball back to the member on the 5ft line  13-Measure the distance the skateboard traveled from its front wheels to the start line  14-Repeat steps 7-13 at the 10 foot and 15 foot lines.  15-Analyze results SAFETY PRECATIONS: -Small cuts/scrapes

9  Trial one:  5 feet Action=4.61in Reaction=1.10in  10 feet Action=3.63in Reaction=0.42in  15 feet Action=4.00in Reaction=0.74in  Trial two:  5 feet Action=3.54in Reaction=1.70in  10 feet Action=3.81in Reaction=1.51in  15 feet Action=3.79in Reaction=1.57in   Calculations  Average movement during the action at 5 feet:  4.61in+3.54in=8.15in  8.15in/2=4.08in  Average movement during the 5ft action is 4.08in.   Average movement during the Reaction at 5 feet:  1.10in+1.70in=2.80in  2.80in/2=1.40in  Average movement during the 5ft reaction is 1.40in.

10  Average movement during the action at 10 feet:  3.81in+3.63in=7.44in  7.44in/2=3.72in  Average movement during the 10ft action is 3.72in.   Average movement during the reaction at 10 feet:  0.42in+1.51in=1.93in  1.93in/2=0.97in  Average movement during the 10ft reaction is 0.97in.   Average movement during the action at 15 feet:  4.00in+3.79in=7.79in  7.79in/2=3.90in  Average movement during the 15ft action is 3.90in.   Average movement during the reaction at 15 feet:  0.74in+1.57in=2.31in  2.31in/2=1.16in  Average movement during the 15ft reaction is 1.16in.

11  From the data that we received we can say that for every action there is an equal and opposite reaction because whenever the ball was thrown the person on the skateboard went back and never did he just stay still and whenver the person on the skateboard caught the ball that was thrown he went back as well from the force that was exerted on him from the ball he was catching.

12  After our experiment, we can conclude that the action of catching and throwing the ball caused the person on the skateboard to be pushed back. We can support this claim because every time the person on the skateboard caught or threw the ball, they rolled back from where they originally were.

13  Our Hypothesis was found to be wrong during our demonstration due to the results that were recorded on Tuesday, the twenty-ninth of September. The skateboard was equally effected by the action and reaction, moving backwards both times. When the ball was thrown to the person on the skateboard it moved backwards and when the ball was thrown by the person on the skateboard the skateboard moved backwards as well. This is because the force exerted on it by the ball pushed it backwards as well as because of the force it exerted and was exerted on when the ball was thrown from the skateboard.


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