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1. A person jumps straight down and decelerates as they land on the ground, at 20 m/s². The mass of the
person is 100kg.
a. Draw a diagram depicting the two vertical forces acting on the person. Define your notation for the
forces. Also include the acceleration in your diagram, making sure to indicate its direction.
b. Compute the normal force exerted on the person by the ground, during their deceleration. Hint:
Make sure to account for the direction of the forces and the acceleration.
Sagot :
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