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College Physics
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ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A 7.0 kg bowling ball moves at 2.35 m/s. How fast must a 2.80 g Ping-Pong ball move so that the two balls have the same kinetic energy?
m/s
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- A 72 kg skiier goes down a 45 meter tall hill and reaches 26 m/s at the bottom of the hill. What is the percentage of the total energy that was lost to friction? A.17% B.23% C.52% D.46% E,31%arrow_forwardA 1.0 kg cart is sliding to the right on a frictionless surface with speed 2 m/s. It collides head-on and sticks to a d.5 kg cart that is sliding to the left with speed 4 m/s. What is the kinetic energy of the combined carts after the collision? (Hint: Make a table!) A.O 2J B.O4J C. 0 J D.O6Jarrow_forwardA 0.500 kg bullet is fired from a gun at 25.0 m/s, how much kinetic energy does it have? 156.3 156.25 J 156 J 156.3 marrow_forward
- Releasing some frustration at the end of the semester, you throw your physics book (mass of 4.3 kg) off of a 24 m tall building. You throw your book so that it has a speed of 3 m/s right after you let go. What is the kinetic energy of your book after you let go? (in J) 12.9 1.01×103 206 0 19.4 How how fast is your textbook moving right before it lands? For now, ignore friction. (in m/s) 21.9 17.5 24.7 21.5 If friction is NOT negligible, and 350 J of the textbook's energy is converted to thermal energy as it falls, how fast is it moving just before it lands? (in m/s) 17.8 17.5 12.8 25.3 25.0arrow_forwardA 7.0 kg bowling ball moves at 2.45 m/s. How fast must a 2.60 g Ping-Pong ball move so that the two balls have the same kinetic energy?arrow_forwardWhat is the kinetic energy of a 146.7 g baseball thrown at 49.8 m/s at a height of 114 m?Use g=9.8arrow_forward
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