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Pranav Bommineni Physics Photo This contrived picture relates to the physics concept of free fall motion. In the absence of air resistance all objects dropped near the surface of a planet fall with the same constant acceleration. Although the example did not take place in the vacuum, it still exemplifies the basic principle, that what goes up must come down/ The amount of time spent up in the air, is equal to the amount of time it took for the person to fall back down from his peak in the air. The velocity as he jumped up in the air is equivalent to his velocity just before he touched the grround again. His standard acceleration, which is common for all objects on Earth, was -9.81m/s2, the acceleration of gravity. At the peak of the man’s jump, his velocity was 0m/s. Since while jumping up he had positive velocity and negative acceleration, he was initially slowing down, and then as he began his descent his speed increased once more. This photo shows how physics can be applied to simple actions in everyday situations, such as jumping and shooting a basketball. No matter what the object, or what the situation, the beginning and ending speeds willa lways be equal, and the acceleration will be constant.