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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A 0.046-kg tennis ball is launched from a 1.35-kg homemade cannon. If the cannon recoils with a speed of -2.1 m/s, determine the velocity of the tennis ball.
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- A 0.230 kg billiard ball that is moving at 3.70 m/s strikes the bumper of a pool table and bounces straight back at 2.96 m/s (80% of its original speed). The collision lasts 0.0200 s. (Assume that the ball moves in the positive direction initially.) (a)Calculate the average force (in N) exerted on the ball by the bumper. (Indicate the direction with the sign of your answer.) Answer _____________ N (b)How much kinetic energy in joules is lost during the collision? (Enter the magnitude.) Answer_______________J (c)What percent of the original energy is left? Answer ________________ %arrow_forwardVlad is fishing in his kayak with his gun. He loses his paddles, but is loaded up with plenty of ammo. If Vlad (60 kg) and the kayak 18 kg are at rest, how many bullets (7.97 grams each) must Vlad fire (at a muzzle velocity of 716.3 m/s) to propel his kayak to a velocity of 4 m/s? (Solve for the total mass of bullets first and then determine the amount.)arrow_forwardA 1.65 kg falcon catches a 0.495 kg dove from behind in midair. What is their velocity after impact if the falcon's velocity is initially 29.5 m/s and the dove's velocity is 5.55 m/s in the same direction?arrow_forward
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