Physics, 01.09.2020 02:01 christinapim
In an experiment on impact and acceleration, a student hides an accelerometer (a device that measures acceleration) inside a baseball. The baseball is then thrown by a pitcher at a speed of 35 m/s towards a batter standing 60 feet away. The batter hits the ball, directly back towards the pitcher, at a speed of 50 m/s. The accelerometer measures an average acceleration during the impact with the bat of 85,000 m/sĀ². How long was the ball in contact with the bat?
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In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ā from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30ā from horizontal. what is the weight of the rider? express your answer with the appropriate units.
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