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Kevin, Joe, and Nick are studying for their physics exam, but they are very confused about momentum conservation. A reading question in their text asks whether the momentum of a ball thrown upward is conserved after it leaves the hand. Kevin says, "The answer is yes since momentum is always conserved." Joe says, "It can't be. It slows down and speeds up." Nick says, "there's no other object involved after it's released so it must be conserved." Do you agree with any of them, or are they all wrong? Explain whether momentum is conserved for the ball and explain how you can tell in general whether the momentum of a system of objects is conserved. Note: This is an essay question. Your answer will be judged not solely on its correctness, but for its depth, coherence, and clarity.
A particle leaves the origin with an initial velocity v = (1.00 ) m/s and a constant acceleration a = (-1.00 - 0.700 ) m/s^2. What is the position vector of the particle at this time
A light ray enters a rectangular block of plastic at an angle of θ1 = 45.0o and emerges at an angle of θ2 = 76.0o. Determine the index of refraction for the plastic
What is the effective resistance of a parallel combination of a very large resistance and a very small resistance, what will be the current through each resistor
Steam enters a nozzle operating at steady state with p = 40 bar and T =400oC, and a velocity of 10 m/s. Determine the exit area of the nozzle
Define what is energy in physics - And what formula do we use to calculate energy and what does energy have to do with osteoporosis?
two point charges are located on the y axis as follows: charge q1 = -1.50nC at y1 = -0.550m , and charge q2 = 4.10nC at the origin, What is the magnitude of the net force
An electron ( mass = 9.11×10?31kg ) leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, If the accelerating force is constant, compute the acceleration of the electron
A merry go round accelerating uniformly from rest achieves thespeed of 2.5 rpm in 5 revolutions. What is the magnitude of its angular acceleration
question1drop solid sphere of aluminium into a bucket of water sitting on ground. the buoyant force equals weight of
You want to create a spherical mirror with a focal length of +15.0 cm. Will the mirror be concave or convex
Two conductors having net charges of +12.0 µC and -12.0 µC have a potential difference of 12.0 V between them. Determine the capacitance of the system
A small object begins a free-fall from a height of H = 86.0 m at t0 = 0 s. At what height from the ground will the two objects first meet
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