1 . If you press for one hour against a stationary wall structure, you do not any work A) on the wall structure. B) at all.
C) both of these D) not one of these 1 . If you press an object two times as far when applying the same force you do E) twice as much work. F) four instances as much function. G) the same amount of work.
installment payments on your If you press an object just like far while applying twice the force you are doing H) two times as much function. I) 4 times all the work. J) the same amount of work.
3. In the event you push a subject with two times the work input for 2 times the time, the power insight is K) twice. L) four moments as much. M) the same amount concerning half the job in half enough time.
4. A job is done slowly, while an identical job is carried out quickly. The two jobs require the same amount of work, but different amounts of N) energy. B) power. C) both of these. D) non-e of such.
5. If you do work on a subject in half the typical time, your power output is O) half the standard power end result. P) the most common power outcome. Q) two times the usual electric power output.
6. Exert 1 N for the distance of just one m in 1 t and you deliver a power of R) 1 Watts. S) a couple of W. T) 1/3 W. U) several W. V) non-e of those.
7. Do 100 T of work in 50 s and your electric power output is W) .25 W. X) 1/2 W. Y) a couple of W. Z) 4 W. [) more than 5 W.
almost eight. When an subject is brought up above the ground it gains a certain amount of potential energy. Should such object can be raised twice as high that gains ) four instances as much potential energy. ]) two times as much potential energy. ^) neither of the.
9. When an object can be lifted 15 meters, it gains a certain amount of potential strength. If the same target is lifted 20 yards, its potential energy gain is _) less. `) the same. a) twice as much. b) several times as much. c) a lot more than 4 times all the.
10. A 1000-kg car and a 2000-kg car are hoisted the same length in a gas station. Bringing up the more massive car requires d) much less work. e) as much function. f) two times as much work. g) four times as much work. h) more than 4 times as much operate.
11. A subject that has kinetic energy should be i) moving. j) slipping. k) in an elevated position. l) sleeping. m) non-e of these.
12. An object which has potential energy may have this energy due to its n) velocity. o) speeding. p) momentum. q) area. r) non-e of these.
13. Bullets happen to be fired from an airplane in the ahead direction of motion. The momentum in the airplane will probably be s) reduced. B) the same. C) increased.
14. A clerk may lift pots a straight distance of just one meter or can move them up a a couple of meter-long ramp to the same elevation. With the ramp, the applied push required is about t) half as much. B) twice as much. C) the same.
15. A bow can be drawn so that it has forty five J of potential strength. When fired, the arrow will ideally have a kinetic strength of u) less than 45 J. B) more than 40 J. C) 40 J.
16. Zero work is performed by gravity on a bowling ball that rolls along a soccer ball alley since v) no force acts on the ball. w) no distance is included in the ball. ) the force on your ball is at right angles for the ball’s movement. y) simply no potential strength is being transformed into kinetic energy. z) it is kinetic energy remains regular.
17. Which usually requires even more work: training a 50-kg sack vertically 2 yards or raising a 25-kg sack top to bottom 4 meters? ) lifting the 50-kg sack ) Both need the same amount of work.
18. A 50-kg sack is lifted 2 yards in the same time as a 25-kg bag is elevated 4 metres. The power spent in raising the 50-kg sack compared to the power utilized to lift the 25-kg bag is ~) twice as very much. B) half as much. C) the same.
nineteen. A TV set is pushed a distance of 2 m which has a force of 20 And that is inside the same course as the set moves. How much work is done for the set? Ð) 2 J B) 10 J C) 20 J D) forty J E) 80 M
20. It will require 40 M to push a big box four m throughout a floor. Presuming the drive is in the same direction since the approach, what is the magnitude from the force within the box? ) 4 And ) 15 N ) 40 D ) one hundred sixty N ) not one of the
21. A 2-kg mass is kept 4 meters above the ground. What is the approximate potential energy in the mass with respect to the ground? ) 20 J ) forty five J ) 60 L ) eighty J probably none of these.
twenty two. A 2-kg mass offers 40 J of potential energy according to ground. Approximately how far can it be located above the ground? ) 1 meters ) a couple of m ) 3 meters ) four m ) probably none of the
23. Huge pile new driver starting from snooze falls over a pile with a force that depends on ) the original height of the driver. ) the first potential strength of the new driver. ) the length the pile is moved. ) many of these. ) non-e of these.
twenty-four. Using a thousand J of, a toy elevator is usually raised from the ground floor to the second floor in 20 seconds. Just how much power does the elevator work with? 20 T B) 50 W C) 100 Watts D) 1000 W E) 20, 000 W
25. One end of a extended, uniform record is brought up to make level.
You read ‘Talambuhay Ni Jose P Laurel’ in category ‘Essay examples’ Another the same log is raised in its center towards the same level. Raising the second log requires about ) the same amount of work. ) two times as much operate. ) a lot more than twice as very much work.
21. Two identical arrows, one with twice the kinetic energy of the other, are dismissed into a hay bale. The faster arrow will sink into ) a similar distance while the slow arrow. ) twice as far as the slower arrow. ) four times as far as the reduced arrow. a lot more than four times as far as the slower arrow. ) non-e of these.
27. A car goes 4 times as soon as another similar car. In comparison to the slower car, the quicker car provides ) 4 times the KE. B) 8 times the KE. ) 12 moments the KE. D) of sixteen times the KE.
twenty-eight. A ball is expected into the atmosphere with 95 J of kinetic energy which is converted to gravitational potential energy at the top of the trajectory. Because it returns to its initial level after encountering air resistance, its kinetic energy is ) less than 100 J. B) more than 100 J. ) 100 L. D) too few information provided.
29. Strictly speaking, if any kind of electrical system in your car is switched on (such because an ac, headlights, or perhaps a radio) more gasoline is usually burned by the engine. This statement is definitely ) entirely false. ) true only if the car’s engine is definitely running. ) true only if the car’s engine is usually stopped. ) almost always accurate. ) non-e of these.
30. A equipment puts out 95 Watts of power for each 1000 W put into that. The productivity of the machine is ) 10%. ) 50%. ) 90%. ) 110%. ) non-e of such.
31. An ungloved closed fist will do even more damage to a jaw than a gloved fist.
The reason for this is certainly that the ungloved fist ) delivers a more substantial impulse to the jaw. B) exerts a greater force around the jaw. ) has fewer air level of resistance on it. D) non-e of the.
32. A woman lifts a box through the floor. The girl then techniques with frequent speed towards the other aspect of the space, where the girl puts this down. Simply how much work does she do on the field while walking across the floor at frequent speed? ) zero L ) more than zero J ) additional information needed to determine
33. Two pool balls, each going at a couple of m/s, spin toward the other person and conflict. Suppose following bouncing separate, each goes at 4 m/s. This kind of collision violates conservation of ) momentum. B) kinetic energy. C) both of these. D) none of the.
34. When compared to a recoiling rifle, the bullet terminated has a increased ) momentum. B) kinetic energy. C) non-e of those. D) quite a few.
35. A bullet has more kinetic strength than the recoiling rifle from which it is fired is because the force around the bullet functions over a for a longer time ) period. B) length. ) these two. D) none of these.
thirty six. An open freight car proceeds friction cost-free along a horizontal track in a flowing rain that falls top to bottom.
As normal water accumulates in the car, the car’s speed ) increases. B) decreases. C) doesn’t transform.
37. An automobile has a head-on collision with another car with the same magnitude of momentum. The same car traveling with the same speed while the first car runs into an enormously massive wall. The greater impulse will occur on the car that is in the collision with the ) nearing car. ) the wall membrane. ) equally impulses would be the same.
35. A popular swinging-balls apparatus (shown below) contains an in-line row of identical supple balls suspended by strings so that the balls barely contact each other.
The moment two golf balls are raised from one end and produced, they strike the row and two balls start up from the opposite end.
39. Physique 7-D
40. If instead one ball popped out with twice the velocity of the two, this could be a infringement of conservation of ) momentum. B) energy. C) both of these. D) non-e of the.
41. If perhaps instead one particular ball popped out with kinetic strength equal to the combined kinetic energy from the two, this could be a breach of conservation of ) momentum. B) energy. ) both of these. D) neither of such.
42. A golf ball is definitely thrown by and bounces backward from a massive bowling ball that may be initially sleeping.
After the accident, compared to the ball, the bowling ball has more ) energy, but fewer kinetic energy. ) kinetic energy, although less momentum. ) energy and more kinetic energy. ) but it provides less energy and less kinetic energy. ) not enough data is given to say.
43. A piece of taffy slams into and sticks to another identical piece of taffy that is certainly at rest. The momentum with the two parts stuck jointly after the impact is the same as it had been before the crash, but this may not be true of the kinetic energy, which is partly turned into heat. What percentage of the kinetic energy is usually turned into warmth? 0% ) 25% ) 50% ) 75% ) not enough information given
44. Two similar freight autos roll devoid of friction (one at you m/s, the other at 2 m/s) toward one other on a level track. That they collide, few together, and roll apart in the way that ) the slower car was going. ) the quicker car was going. ) neither of such , they will stop.
forty five. Two 5000-kg freight vehicles roll without friction (one at one particular m/s, the other at 2 m/s) toward the other person on a level track. That they collide, couple, and move away as well as a merged momentum of ) no. ) B) 5000 kilogram m/s. ) C) 15, 000 kilogram m/s. D) 15, 1000 kg m/s.
46. Which requires the most amount of work within the brakes of any car? ) slowing down by 100 km/h to 75 km/h ) slowing down via 70 km/h to a stop ) the same amounts to get either
forty seven. A car that travels twice as fast as another when braking to a stop will certainly skid ) twice as far. ) several times because far. ) depends on the mass of the autos.
48. Two identical arrows, one with twice the speed of the other, will be fired in a hay bale. The more quickly arrow will certainly penetrate ) the same range as the slower arrow. ) two times as far because the sluggish arrow. ) four moments as far as the slower arrow. more than several times in terms of the sluggish arrow. ) non-e of these.
49. A person around the edge of any roof tosses a ball downward. That strikes the floor with 95 J of kinetic energy. The person includes another identical ball upwards with the same initial speed, and this too falls towards the ground. Neglecting air resistance, the second ball hits the earth with a kinetic energy of ) 95 J. ) 200 J. ) lower than 100 L. ) much more than 200 L. ) none of these.
Answer Keys: 1) Answer: A 2) Answer: A 3) Answer: A 4) Solution: C 5) Answer: W 6) Solution: C 7) Answer: A 8) Solution: C 9) Answer: M 10) Solution: C 11) Answer: C 2) Answer: A 13) Answer: G 14) Answer: A 15) Answer: A 16) Solution: C 17) Answer: C 18) Answer: C 19) Answer: C 20) Solution: D 21) Answer: N 22) Response: D 23) Answer: M 24) Answer: D 25) Answer: W 26) Response: B 27) Answer: B 28) Response: D 29) Answer: A 30) Solution: D 31) Answer: A 32) Solution: B 33) Answer: A 34) Answer: B 35) Answer: B 36) Solution: B 37) Answer: B 38) Answer: C 39) Answer: B 40) Solution: A 41) Answer: B 42) Solution: A 43) Answer: C 44) Response: C 45) Answer: W 46) Answer: C 47) Answer: A 48) Answer: B 49) Answer: M 50) Answer: A