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Find a smooth, hard surface in your house or outside (no carpet). Make a mark on the ground. Get a ball or marble, and predict how far it will roll if you gently push it from your mark. Gently push the ball or marble, making sure that it does not hit a wall or a piece of furniture. Measure the distance it rolls, beginning at the starting mark you made. How close was your prediction? Why did the ball stop? What happened to the kinetic energy in the rolling ball? Give as much detail as you can.
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Physics, 22.06.2019 05:20, cwsmith8026
Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to. in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?
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Find a smooth, hard surface in your house or outside (no carpet). Make a mark on the ground. Get a b...
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