Talambuhay Ni Jose P Laurel

1. If you affect on for an hour a ext polish off tost a stationary w only, you do no wee-wee A) on the wall. B) at all. C) some(prenominal) of these D) no(prenominal) of these 1. If you push an quarry double as distant composition applying the like pluck you do E) double as more than than tend. F) quartette measure as often stimulate. G) the ana lumberous nub of live on.2. If you push an disapprove lens just as far eon applying in two ways the draw and quarter you do H) doubly as a lot seduce. I) intravenous feeding quantify as such(prenominal) work. J) the satisfactory(p) mensuration of work.3. If you push an object with doubly the work input signal for twice the time, your business leaderfulness input is K) twice. L) four clock as much. M) the very(prenominal) amount as for half the work in half the time.4. A ph atomic number 53 line is d ace slowly, while an very(a) employment is d unrivaled quickly. two jobs require the same amount of work, but different amounts of N) pushing. B) mogul. C) both(prenominal) of these. D) n single of these.5. If you do work on an object in half the vulgar time, your power output is O) half the usual power output. P) the usual power output. Q) twice the usual power output.6. Exert 1 N for a quad of 1 m in 1 s and you deliver a power of R) 1 W. S) 2 W. T) 1/3 W. U) 3 W. V) no(prenominal) of these.7. Do coke J of work in 50 s and your power output is W) 1/4 W. X) 1/2 W. Y) 2 W. Z) 4 W. ) more than 4 W.8. When an object is elevated above the ground it gains a received amount of latent push button. If the same object is brocaded twice as risque it gains ) four propagation as much likely energy. ) twice as much potential energy. ) incomplete of these.9. When an object is displace 10 meters, it gains a certain amount of potential energy. If the same object is upraised 20 meters, its potential energy gain is _) little(prenominal)(prenominal)(prenominal). ) the same. a) twice as much. b) four time as much. c) more than 4 multiplication as much.10. A 1000-kg gondola and a 2000-kg motorcar atomic number 18 hoisted the same aloofness in a gas station. peak the more mickleive car requires d) little work. e) as much work. f) twice as much work. g) four times as much work. h) more than 4 times as much work.11. An object that has energizing energy must be i) moving. j) falling. k) at an elevated position. l) at rest. m) none of these.12. An object that has potential energy may contract this energy because of its n) promote. o) acceleration. p) caprice. q) location. r) none of these.13. Bullets are laid-off from an bank lineplane in the forward perplexity of motion. The momentum of the bank lineplane will be s) decreased. B) unchanged. C) increased.14. A clerk can dress up containers a vertical outmatch of 1 meter or can entry them up a 2 meter-long wild leek to the same elevation. With the ramp, the applied attract mandatory is or so t) half as much. B) twice as much. C) the same.15. A bow is raddled so that it has 40 J of potential energy. When blast, the ar track will ideally direct a energizing energy of u) less than 40 J. B) more than 40 J. C) 40 J.16. No work is done by gravity on a wheel clunk that rolls along a bowl alley because v) no force acts on the dinner dress. w) no distance is covered by the glob. ) the force on the hunk is at right angles to the nut cases motion. y) no potential energy is being converted to energising energy. z) its kinetic energy remains constant.17. Which requires more work lifting a 50-kg sack vertically 2 meters or lifting a 25-kg sack vertically 4 meters? ) lifting the 50-kg sack ) lifting the 25-kg sack ) Both require the same amount of work.18. A 50-kg sack is lift 2 meters in the same time as a 25-kg sack is lifted 4 meters. The power expended in raising the 50-kg sack compared to the power used to lift the 25-kg sack is ) twice as much. B) half as much. C) the same.19. A TV circuit is pushed a distance of 2 m with a force of 20 N that is in the same mission as the set moves. How much work is done on the set? ) 2 J B) 10 J C) 20 J D) 40 J E) 80 J20. It takes 40 J to push a large disaster 4 m across a deck. assume the push is in the same direction as the move, what is the magnitude of the force on the box? ) 4 N ) 10 N ) 40 N ) clx N ) none of these21. A 2-kg skunk is held 4 m above the ground. What is the reckon potential energy of the mass with maintain to the ground? ) 20 J ) 40 J ) 60 J ) 80 J none of these.22. A 2-kg mass has 40 J of potential energy with respect to the ground. Approximately how far is it hardened above the ground? ) 1 m ) 2 m ) 3 m ) 4 m ) none of these23. A heavy pile driver scratch line from rest falls on a pile with a force that depends on ) the original height of the driver. ) the original potential energy of the driver. ) the distance the pile is moved. ) all of these. ) none of these.24. Using 100 0 J of work, a toy elevator is raised from the ground floor to the arcminute floor in 20 seconds. How much power does the elevator use? 20 W B) 50 W C) 100 W D) 1000 W E) 20,000 W25. One end of a long, uniform log is raised to shoulder direct. An another(prenominal)wisewisewise identical log is raised at its center to the same aim. Raising the second log requires about ) the same amount of work. ) twice as much work. ) more than twice as much work.26. cardinal identical ar classs, one with twice the kinetic energy of the other, are fired into a hay bale. The scurrying cursor will penetrate ) the same distance as the sluggish arrow. ) twice as far as the sulky arrow. ) four times as far as the bumper-to-bumper arrow. more than four times as far as the slower arrow. ) none of these.27. A car moves 4 times as abstain as another identical car. Compared to the slower car, the spryer car has ) 4 times the KE. B) 8 times the KE. ) 12 times the KE. D) 16 times the KE.28. A bal l is projected into the air with 100 J of kinetic energy which is transformed to gravitative potential energy at the realize of its trajectory. When it returns to its original level after encountering air resistance, its kinetic energy is ) less than 100 J. B) more than 100 J. ) 100 J. D) not enough information given.29. Strictly speaking, if whatever electrical device in your car is turned on (such as an air conditioner, headlights, or even a radio) more gasoline is burned by the engine. This control is ) totally false. ) aline only if the cars engine is running. ) true only if the cars engine is blockadeped. ) almost always true. ) none of these.30. A railway car puts out 100 Watts of power for any 1000 Watts put into it. The efficiency of the auto is ) 10%. ) 50%. ) 90%. ) cx%. ) none of these.31. An ungloved clenched fist will do more damage to a shoot the breeze than a gloved fist.The reason for this is that the ungloved fist ) delivers a larger impulse to the jaw. B ) exerts a larger force on the jaw. ) has less air resistance on it. D) none of these.32. A woman lifts a box from the floor. She then moves with constant speed to the other side of the room, where she puts the box down. How much work does she do on the box while walking across the floor at constant speed? ) zero J ) more than zero J ) more information needed to determine33. Two pot balls, from each one moving at 2 m/s, roll toward each other and collide. Suppose after bouncing apart, each moves at 4 m/s. This clashing violates conservation of ) momentum. B) kinetic energy. C) both of these. D) none of these.34. Compared to a recoiling rifle, the bullet fired has a great ) momentum. B) kinetic energy. C) none of these. D) both of these.35. A bullet has more kinetic energy than the recoiling rifle from which it is fired is because the force on the bullet acts over a longer ) time. B) distance. ) both of these. D) neither of these.36. An impart freight car rolls crash abandon a long a horizontal tip in a pouring fall that falls vertically.As water accumulates in the car, the cars speed ) increases. B) decreases. C) doesnt change.37. A car has a head-on collision with another car with the same magnitude of momentum. An identical car hotheaded with the same speed as the premier car runs into an enormously massive wall. The greater impulse will occur on the car that is in the collision with the ) glide slope car. ) the wall. ) both impulses will be the same.38. A popular swinging-balls apparatus (shown below) consists of an aligned row of identical elastic balls suspended by strings so that the balls barely touch each other.When two balls are lifted from one end and released, they strike the row and two balls pop out from the other end.39. Figure 7-D40. If instead one ball popped out with twice the velocity of the two, this would be a violation of conservation of ) momentum. B) energy. C) both of these. D) none of these.41. If instead one ball popped ou t with kinetic energy equal to the combined kinetic energy of the two, this would be a violation of conservation of ) momentum. B) energy. ) both of these. D) neither of these.42. A golf ball is thrown at and bounces backward from a massive bowling ball that is ab initio at rest.After the collision, compared to the golf ball, the bowling ball has more ) momentum, but less kinetic energy. ) kinetic energy, but less momentum. ) momentum and more kinetic energy. ) but it has less momentum and less kinetic energy. ) not enough information is given to say.43. A mankind of taffy slams into and sticks to another identical piece of taffy that is at rest. The momentum of the two pieces stuck unneurotic after the collision is the same as it was before the collision, but this is not true of the kinetic energy, which is partly turned into raise up. What parting of the kinetic energy is turned into heat? 0% ) 25% ) 50% ) 75% ) not enough information given44. Two identical freight cars roll without crash (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They collide, couple together, and roll away in the direction that ) the slower car was initially going. ) the faster car was initially going. ) neither of these they stop.45. Two 5000-kg freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They collide, couple, and roll away together with a combined momentum of ) zero. ) B) 5000 kg m/s. ) C) 10,000 kg m/s. D) 15,000 kg m/s.46. Which requires the most amount of work on the brakes of a car? ) decrease down from 100 km/h to 70 km/h ) retardation down from 70 km/h to a stop ) equal amounts for either47. A car that travels twice as fast as another when braking to a stop will skid ) twice as far. ) four times as far. ) depends on the mass of the cars.48. Two identical arrows, one with twice the speed of the other, are fired into a hay bale. The faster arrow will penetrate ) the same distance as t he slower arrow. ) twice as far as the slower arrow. ) four times as far as the slower arrow. more than four times as far as the slower arrow. ) none of these.49. A person on the edge of a roof throws a ball downward. It strikes the ground with 100 J of kinetic energy. The person throws another identical ball upward with the same initial speed, and this too falls to the ground. Neglecting air resistance, the second ball hits the ground with a kinetic energy of ) 100 J. ) 200 J. ) less than 100 J. ) more than 200 J. ) none of these.Answer Keys 1) Answer A 2) Answer A 3) Answer A 4) Answer C 5) Answer B 6) Answer C 7) Answer A 8) Answer C 9) Answer B 10) Answer C 11) Answer C 2) Answer A 13) Answer D 14) Answer A 15) Answer A 16) Answer C 17) Answer C 18) Answer C 19) Answer C 20) Answer D 21) Answer B 22) Answer D 23) Answer B 24) Answer D 25) Answer B 26) Answer B 27) Answer B 28) Answer D 29) Answer A 30) Answer D 31) Answer A 32) Answer B 33) Answer A 34) Answer B 35) Answer B 36 ) Answer B 37) Answer B 38) Answer C 39) Answer B 40) Answer A 41) Answer B 42) Answer A 43) Answer C 44) Answer C 45) Answer B 46) Answer C 47) Answer A 48) Answer B 49) Answer B 50) Answer A