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Physics, 21.06.2019 16:00
Suppose you use a machine that gives you a mechanical advantage of 2 to achieve an output force of 30newtons what must the input force be
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Physics, 22.06.2019 05:20
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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Physics, 22.06.2019 08:00
Who was the first scientist to measure speed as distance over time?
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