Physics, 08.07.2019 11:00 peperivera2652738
Abox (m = 20 kg) is sliding on a horizontal surface. it is connected to a massless hook by a light string passing over a massless pulley wheel. the coefficients of friction between the box and the surface are 0.80 (static) and 0.30 (kinetic). if 15 kg (in total) are placed on the hook, calculate the acceleration of the box.
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Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?
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Abox (m = 20 kg) is sliding on a horizontal surface. it is connected to a massless hook by a light s...
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