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Investigation Results

Investigation Results. 1.) The molecules in the golf ball have a small amount of K E since they are vibrating in place. It does not have the ability to move on its own due to its position (sitting in the sand) so it does not have any GP E . If K E = 0J and GP E = 0J then M E is also 0J!!!

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Investigation Results

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  1. Investigation Results 1.) The molecules in the golf ball have a small amount of KE since they are vibrating in place. It does not have the ability to move on its own due to its position (sitting in the sand) so it does not have any GPE. If KE = 0J and GPE = 0J then ME is also 0J!!! 2.) The golf ball now has GPE b/c it is above the ground… it now has a height of 25cm!!! It does not have KE though since it is not moving.

  2. Investigation Results 3.) The golf ball got its energy from the person who picked it up and moved it to a height!!! The person TRANSFERRED energy to the ball from themselves when they lifted it!!! This energy came from the person’s muscles. The muscles got their energy from the food you ate. Tracing this flow of energy is called an ENERGY CHAIN.

  3. Investigation Results 4.) The ball dropped from the highest point = 100cm caused the biggest crater. 5.)The variable that changed here was the MASS of the ball. Everything else remained constant (stayed the same). The craters produced by the hollow ball w/ less mass were smaller. Mass affects GPE and KE!!!

  4. Investigation Results 6.) Both of the balls hit the sand at the same speed!!! (In other words, they fall at the same time!!!)…Watch I’ll show you… The difference between the two balls is the amount of energy!!! The more massive ball possesses more energy!!!

  5. Investigation Results 7.) The big point you should have concluded is that MASS affects both GPE and KE. You should have also concluded that the higher the release point, the faster the ball will be traveling when it hits the sand. Gravity speeds up ALL falling objects at the same rate (9.8 m/s2). The greater the speed of the object when it hits the sand, the greater the KE.

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