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Q. The displacement vector for a 15 second interval of a jet airplane's flight is (2150, -2430) m. (1) what is the magnitude of the average velocity? (2) At what angle, measured from the positive x axis, did the airplane fly throughout this time interval? State the angle as a number between -180° and +180°

Q. A 0.360 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball.

(i) What is the mass of the second ball?

(ii) What fraction of the original kinetic energy (ΔKE/KE) gets transferred to second ball?

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Category:- Physics
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