Physics, 31.01.2020 20:06, evanwall91
Rita throws a ball straight up into the air and catches it at the same position from which she threw it. the ball has 18 j of mechanical energy when it leaves her hand. if no energy is lost due to friction, which statements about the energy of the ball are true? check all that apply. (1) the potential energy at the top of the ball’s motion is 18 j. (2) the kinetic energy is less when the ball is thrown than when it is caught. (3) the kinetic energy increases as the potential energy decreases. (4)the kinetic energy decreases as the potential energy increases. (5)the total mechanical energy of the ball stays constant. (6) the mechanical energy decreases as the ball moves up and increases as the ball comes down.
Answers: 2
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How is the ideal mechanical advantage of a wheel and axle calculated?
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Physics, 23.06.2019 01:40, coollid876
(8%) problem 12. a bowling ball of mass mb 3 kg 's rolled down the lane with a velocity ofy-2/ m s lt strikes a single remaining pin mp 0.93 kg head on. after the collision the bowling ball has a velocity (in the same direction) of v2 1.1 m/s. = ▲ 33% part (a) write an expression for the velocity of pin in the horizontal direction after the impact, im ,, 33% part (b) what is the pins speed in ms? 33% part (c) assuming the coefficient of friction s μ,-0.1. how far in meters could the pin slide before stopping if it doesn't topple?
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Physics, 23.06.2019 04:20, samiyahbass
The velocity of sound wave in air at 35°c is 353m/s, calculate the velocity of sound at 46°c
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Rita throws a ball straight up into the air and catches it at the same position from which she threw...
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