Physics 1 Final Exam Review Sheet

Physics 1 Final Exam Review Sheet - added to one side as...

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1. 2. 3.
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4. 5.
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6. Anita is running to the right at 10 m/s, as shown in the figure. Balls 1 and 2 are thrown toward her by friends standing on the ground. According to Anita, both balls are approaching her at 15 m/s. According to her friends, with what speeds was the ball 2 thrown? A. -5 m/s B. +5 m/s C. -15 m/s D. +15 m/s E. -25 m/s F. +25m/s 7. One day you look in your refrigerator and find nothing but a dozen of eggs (44 g each). A quick measurement shows that the inside of the refrigerator is 1.0 m by 0.60
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m by 0.75 m. Is the weight of the air in the refrigerator __________ the weight of the eggs (a dozen)? The density of air is 1.29 kg/m 3 . a. much less than b. the same as c. more than 8. 9. 10. 11.
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12. 13.
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14. 15. 16.
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17. An unfueled 1000-kg experimental rocket sled at rest on level frictionless rails is loaded with 50 kg of propellant. It exhausts the propellant in a 20 s "burn". The rocket moves at 160 m/s after the burn. What average force is experienced by the rocket during the burn? Hint: apply the impulse-momentum theorem. a. 6000 N b. 7500 N c. 8000 N d. 3500 N e. 16,000 N 18. 19.
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20. A U-shaped tube is filled mostly with water, but a small amount of vegetable oil has been
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Unformatted text preview: added to one side, as shown in the fgure. The density oF the water is 1.00x10 3 kg/m 3 , and the density oF the vegetable oil is 9.20x10 2 kg/m 3 . IF the depth oF the oil is 5.00 cm, what is the height h1 on the other side? a. 4.60 cm b. 0.40 cm c. 8.3 cm d. 9.8 cm e. 3.8 cm 21. A tank oF water as shown in the fgure below has a hole through the side oF the tank at a depth h below the surFace. What is the speed v 2 oF the water as it emerges? Hint: use Bernoulli's equa±on. a. sqrt(2gh) b. sqrt(gh) c. gh d. 2sqrt(gh) e. sqrt(gh/2) 22. A spring with spring constant 17 N/m hangs From the ceiling. A ball is a²ached to the spring and allowed to come to rest. It is then pulled down 4 cm and released. The ball makes 30 oscilla±ons in 15 seconds. What is its maximum speed? 23. A mass M is a²ached to an ideal massless spring. When this system is set in mo±on with amplitude A, it has a period T. What is the period iF the amplitude oF the simple harmonic mo±on is increased to 2A?\...
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