Physics

Physics, 17.11.2019 09:31, jaden120

A2.0 kg solid ball traveling at 3.0 m/s strikes a 0.5 kg solid ball at rest. no kinetic energy is lost during the collision. immediately after the collision, what is the linear momentum of the system? what is the ke of the system

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Physics, 24.06.2019 16:50, wafflewarriormg

Part a part complete imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball. the target balls are free to move, and all the balls have the same mass. in the collision between the sad balls, how much of the balls' kinetic energy is dissipated? view available hint(s) imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball. the target balls are free to move, and all the balls have the same mass. in the collision between the sad balls, how much of the balls' kinetic energy is dissipated? none of it all of it half of it previous answers correct the collision between the sad balls is completely inelastic, and due to the conservation of momentum, the velocity of the balls after the collision will be half the velocity of the incoming ball before the collision. the expression for kinetic energy is 12mv2, and while there is double the mass moving after the collision as before, the decrease in velocity by a factor of two results in the overall kinetic energy being half its initial value. part b now, consider the collision between two happy balls described in part a. how much of the balls' kinetic energy is dissipated?

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Physics, 06.09.2019 18:30, kailerwebb2

Perform the analysis for energy and momentum as before. using the quasi-analytical rotational inertia from the previous question, calculate the angular kinetic energy of the ball before the collision, and the angular kinetic energy of the pendulum system after the collision using equations 5, 6, and 11.  what is the kinetic energy of the ball immediately after the collision? why?  is this a perfectly elastic collision? what is the percentage of the kinetic energy lost (converted to thermal energy) during the collision?

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Physics, 26.11.2019 05:31, BeautyxQueen

Imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball. the target balls are free to move, and all the balls have the same mass. in the collision between the sad balls, how much of the balls' kinetic energy is dissipated? a) none of it b) all of it c) half of it they refer to a "sad ball" as a ball which doesn't bounce at all. example, if you dropped the ball on the ground it would simply stop (like clay) --> so it's a completely inellastic collision. the answer is half of it, but could someone explain how we arrive to this conclusion? like maybe using some formulas?

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Physics, 02.12.2019 21:31, aangellexith4237

Arod of mass m = 116 g and length l = 49 cm can rotate about a hinge at its left end and is initially at rest. a putty ball of mass m = 14 g, moving with speed v= 6 m/s, strikes the rod at angle a = 37º a distance d=l/4 from the end and sticks to the rod after the collision. (a) what is the total moment of inertia, 1, with respect to the hinge, of the rod-ball-system after the collision? (b) enter an expression for the angular speed w of the system immediately after the collision, in terms of m, v, d, 0, (c) calculate the rotational kinetic energy, in joules, of the system after the collision

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A2.0 kg solid ball traveling at 3.0 m/s strikes a 0.5 kg solid ball at rest. no kinetic energy is lo...

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