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DIGNOSTIC TEST Refer o he figure below when answering he firs wo quesions (1 and 2). This diagram represens a muliflash phoograph of an objec moving along a horizonal surface. The posiions indicaed in he diagram are separaed by equal ime inervals. The firs flash occurred jus as he objec sared o move and he las jus as i came o res. 1. Which of he graphs 1 5 below bes represens he objec s velociy as a funcion of ime? 1 2 3 4 5 2. Which of he graphs 1 5 below bes represens he objec s acceleraion as a funcion of ime? a a a a a 1 2 3 4 5 H
3. The velociy of an objec as a funcion of ime is shown in he following graph. Which of he graphs 1 5 bes represens he ne-force vs. ime relaionship for his objec? 1 2 3 4 5 Refer o he following figure when answering he nex hree quesions (4 hrough 6). This diagram depics a block sliding along a fricionless ramp. The eigh numbered arrows in he diagram represen direcions o be referred o when answering quesions 4 6. P 8 1 2 7 3 6 4 5 R Q 4. The direcion of he acceleraion of he block, when in posiion P, is bes represened by which of he arrows in he diagram? 1. rrow 1 2. rrow 2 2. rrow 4 4. rrow 5 5. None of he arrows, he acceleraion is zero.
5. The direcion of he acceleraion of he block when in posiion Q is bes represened by which of he arrows in he diagram? 1. rrow 1 2. rrow 3 3. rrow 5 4. rrow 7 5. None of he arrows, he acceleraion is zero. 6. The direcion of he acceleraion of he block (afer leaving he ramp) a posiion R is bes represened by which of he arrows in he diagram? 1. rrow 2 2. rrow 3 3. rrow 5 4. rrow 6 5. None of he arrows, he acceleraion is zero. 7. person pulls a block across a rough horizonal surface a a consan speed by applying a force. The arrows in he diagram below correcly indicae he direcions, bu no necessarily he magniudes of he various forces on he block. Which of he following relaions among he force magniudes W, k, N, and mus be rue? N k W 1. = k and N = W 2. = k and N > W 3. > k and N < W 4. < k and N = W 5. None of he above choices
8. small meal cylinder ress on a circular urnable, roaing a a consan speed as illusraed in he diagram below.which of he ses of vecors 1 5 below bes describes he velociy, acceleraion, and ne force acing on he cylinder a he poin indicaed in he diagram? a a = 0 a = 0 a a 1 2 3 4 5 9. Suppose ha he meal cylinder in he las problem has a mass of 0.10 kg and ha he coefficien of saic fricion beween he surface and he cylinder is 0.12 If he cylinder is 0.20 m from he cener of he urnable, a wha maximum speed v can he cylinder move along is circular pah wihou slipping off he urnable? 1. 0 < v 0.5 m/s. 2. 0.5 < v 1.0 m/s. 3. 1.0 < v 1.5 m/s. 4. 1.5 < v 2.0 m/s. 5. 2.0 < v 2.5 m/s.
10. young girl wishes o selec one of he fricionless playground slides illusraed below o give her he greaes possible speed when she reaches he boom of he slide. 2.5 m 0.5 m 1 2 3 4 H Which of he slides illusraed in he diagram above should she choose? 1. Slide 1 2. Slide 2 3. Slide 3 4. Slide 4 5. I doesn maer, her speed would be he same for each slide.
Refer o he figure below when answering he nex wo quesions (11 and 12). P and R mark he highes and Q he lowes posiions of a 50.0-kg boy swinging as illusraed in he following figure. 5.0 m P 1.0 m Q R 11. Wha is he boy s speed a poin Q? 1. 2.5 m/s 2. 7.5 m/s 3. 10.0 m/s 4. 12.5 m/s 5. None of he above. 12. Wha is he ension in he rope a poin Q? 1. 250 N 2. 525 N 3. 7 10 2 N 4. 1.1 10 3 N 5. None of he above.
Refer o he figure below when answering he nex wo quesions (13 and 14). locks and, each wih a mass of 1.0 kg, are hung from he ceiling of an elevaor by ropes 1 and 2. 2 1 H 13. Wha is he force exered by rope 1 on block when he elevaor is raveling upward a a consan speed of 2.0 m/s? 1. 2 N 2. 10 N 3. 12 N 4. 20 N 5. 22 N 14. Wha is he force exered by rope 1 on block when he elevaor is saionary? 1. 2 N 2. 10 N 3. 12 N 4. 20 N 5. 22 N
Refer o he following figure when answering he nex wo quesions (15 and 16). The figure below depics he pahs of wo colliding seel balls, and. H 15. Which se of arrows bes represens he direcion of he change in momenum of each ball? 1 2 3 4 5 16. Which arrow bes represens he impulse applied o ball by ball during he collision? 1 2 3 4 5 H
17. car has a maximum acceleraion of 3.0 m/s 2. Wha would is maximum acceleraion be while owing a second car wice is mass? 1. 2.5 m/s 2 2. 2.0 m/s 2 3. 1.5 m/s 2 4. 1.0 m/s 2 5. 0.5 m/s 2 18. woman weighing 6.0 10 2 N is riding an elevaor from he 1 s o he 6 h floor. s he elevaor approaches he 6 h floor, i decreases is upward speed from 8.0 o 2.0 m/s in 3.0 s. Wha is he average force exered by he elevaor floor on he woman during his 3.0-s inerval? 1. 120 N 2. 480 N 3. 600 N 4. 720 N 5. 1200 N 19. The diagram below depics a hockey puck moving across a horizonal, fricionless surface in he direcion of he dashed arrow. consan force, shown in he diagram, is acing on he puck. or he puck o experience a ne force in he direcion of he dashed arrow, anoher force mus be acing in which of he direcions 1 5 below? 3 4 5 2 1
Refer o he following figure when answering he nex hree quesions (20 hrough 22). The diagram below depics wo pucks on a fricionless able. Puck is four imes as massive as puck. Saring from res, he pucks are pushed across he able by wo equal forces. finish m 4m 20. Which puck has he greaer kineic energy upon reaching he finish line? 1. Puck 2. Puck 3. They boh have he same amoun of kineic energy. 4. oo lile informaion o answer 21. Which puck reaches he finish line firs? 1. Puck 2. Puck 3. They boh reach he finish line a he same ime. 4. oo lile informaion o answer 22. Which puck has he greaer momenum upon reaching he finish line? 1. Puck 2. Puck 3. They boh have he same momenum. 4. oo lile informaion o answer
Refer o he following figure when answering he nex hree quesions (23 hrough 25). The graph below represens he moion of an objec moving in one dimension. 5 velociy (m/s) 0 5 10 15 ime (s) 23. Wha was he objec s average acceleraion beween = 0 s and = 6.0 s? 1. 3.0 m/s 2 2. 1.5 m/s 2 3. 0.83 m/s 2 4. 0.67 m/s 2 5. none of he above 24. How far did he objec ravel beween = 0 and = 6.0 s? 1. 20.0 m 2. 8.0 m 3. 6.0 m 4. 1.5 m 5. none of he above 25. Wha was he average speed of he objec for he firs 6.0 s? 1. 3.3 m/s 2. 3.0 m/s 3. 1.8 m/s 3. 1.3 m/s 5. none of he above
26. The figure below represens a muliflash phoograph of a small ball being sho sraigh up by a spring. The spring, wih he ball aop, was iniially compressed o he poin marked P and released. The ball lef he spring a he poin marked Q, and reached is highes poin a he poin marked R. R Q P ssuming ha he air resisance was negligible: 1. The acceleraion of he ball was greaes jus before i reached poin Q (sill in conac wih he spring). 2. The acceleraion of he ball was decreasing on is way from poin Q o poin R. 3. The acceleraion of he ball was zero a poin R. 4. ll of he above responses are correc. 5. The acceleraion of he ball was he same for all poins in is rajecory from poins Q o R.