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Physics, 10.11.2020 01:10, babygirlslay109
PLEASE HELP A 0.25 kg ball strikes a 1.25 kg ball at rest. after collision the 0.25 kg ball is moving with a velocity of 18 m/s, and the second ball is moving with a velocity if 9m/s .what is the initial velocity of the first ball?
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Answers: 3
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Physics, 22.06.2019 19:30, paulstanley972
Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
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A 0.25 kg ball strikes a 1.25 kg ball at rest. after collision the 0.25 kg ball is movi...
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