Do Unit 2 Test Day 1 Ver A SPH4U Er X + X C @ File | C:/Users/ghrer/Downloads/Unit%202%20Test%20Day%201%20Ver%20A%20SPH40%20Energy%20and%20Momentum.pdf G . . . | | V Draw 2 | | Read aloud of 3| 2 1 ED Q 16 8 O 5. A golf club exerts an average force of 7200 N on a ball for the 0.0005s they are in contact. If the ball has a mass of 45 g, what velocity will it have as it leaves the club face? [2 marks] O + 6. A 12000 kg railroad car is coasting along a level, frictionless track at a constant speed of 25 m/s, when a 3000 kg load is dropped vertically onto the car from above. What will its new speed be, assuming the load stays on the car? [3 marks] 7. A 2000 kg car travelling east at 24 m/s enters an icy intersection and collides with a 3600 kg truck travelling south at 10 m/s. If they become coupled together in the collision, what is their velocity immediately after impact? [4 marks] So3 8 . C 3:30 PM Sunny Search amazon ENG US 2023-04-09 16Do Unit 2 Test Day 1 Ver A SPH4U Er X + X C File | C:/Users/ghrer/Downloads/Unit%202%20Test%20Day%201%20Ver%20A%20SPH40%20Energy%20and%20Momentum.pdf G . . . | | V Draw 2 | | Read aloud + 3 of 3| 12 1 ED Q 16 8 O 8. Two carts, of mass 4.5 kg and 1.0 kg, are moving towards each other along the same straight, level O track at 2.0 m/s to the right and 4.0 m/s to the left, respectively. Their collision is cushioned by a elastic spring between them. If the force constant of the spring is 900 N/m, what is its maximum compression + during the collision? [5 marks] 9. A 4.0 kg ball moving to the right at 5.0 m/s collides head-on with a 2.0 kg ball moving to the left at 4.0 m/s. If the collision is elastic, determine the direction and speed of each ball after the collision. [6 marks] 4.0 kg 5.0 m/'s 4.0 m/s 20 kg V , V 2 m, m 2 OneDrive . . . X Screenshot saved The screenshot was added to your OneDrive. 8 . C Sunny Search amazon ENG 3:30 PM US 2023-04-09 16and *Unit 2 Quiz 2 Ver A SPH4U Mon X + X C File | C:/Users/ghrer/Downloads/Unit%202%20Quiz%202%20Ver%20A%20SPH40%20Momentum%20and%20Collisions.pdf BETA . . . | | V Draw 2 | | Read aloud - 3 of 4 | | ED Q 6 8 9 7 O 11. A blazing spike of 0.29 kg volleyball is blocked at the net. It is originally travelling at 18.3 m/s [Right] and bounces straight back at 15 m/s [Left] after being in contact with the blockers arms for a total of 0.02 s. What average force did the blocker exert on the ball? [3 marks] O + 12. A 0.25-kg snowball moving at 15 m/s [E] collides with a 1.9-kg toy truck travelling at 2.8 m/s [W]. Neglecting friction, calculate the velocity of the snowball if the truck is travelling at 5 m/s [E] after the collision. [3 marks] 13. A 63-kg student stands on a 34-kg cart that is free to move in any direction. The cart and student are moving together with a velocity of 3.2 m/s [W]. The student then starts to walk so that her velocity is 1.8 m/s [N] relative to the floor. Calculate the new velocity of the cart. [5 marks] 503 8 . C Search amazon ENG 3:31 PM Sunny US 2023-04-09 16Do Unit 2 Test Day 1 Ver A SPH4U Er X + X C @ File | C:/Users/ghrer/Downloads/Unit%202%20Test%20Day%201%20Ver%20A%20SPH40%20Energy%20and%20Momentum.pdf G . . . | ~ | V Draw 2 | | Read aloud -+l 1 of 3 | 2 1 ED Q16 8 1. What is the kinetic energy of a wagon of mass 15 kg whose momentum is 60 kg.m/s? [2 marks] O + 2. A sledge hammer has a mass of 4.0 kg and is moving down at a speed of 6.0 m/s when it strikes a fence post, driving it 10 cm farther into the ground. What is the magnitude of the average force exerted on the fence post by the hammer? [2 marks] 3. A 10.0-kg toy motorized boat uses 8 W of power, accelerates from rest and reaches a certain speed in 10 s on a horizontal surface. What was that final speed? [3 marks] 4. A block of mass 2.5 kg is sliding across a smooth, level surface at 3.0 m/s when it hits a stationary spring bumper, fixed at one end as shown, whose force constant is 360 N/m. By what amount does the block compress the spring, before coming to rest? [3 marks] 3.0 m/'s 2.5 kg So3 8 . C 3:30 PM Sunny Search LO amazon ENG US 2023-04-09 16Apply Edgy momentum confervation in to west- to direction => miVI + my V, t = mivit mzval = ) 63 x - 3 . 2) + 34 x ( 3. ? ) - 63 x @, + mov, - 310. 4 = 34 x V, = - 810. 4 34 = - 9.129 = 9.129 (west ) So final new velocity of cart will be as sustant of its west and south direction =] final NUR + V 2 final = N (3 . 335 ) 2 + ( 9. 129 ) 2 = N 11. 12 + 83. 33 N = N 94.45 student = 9. 71 m/s W can't + student Kcanttouck Show ball ma East west V2 VI mg = 1.9 kg V MI= 0.25 kg V1 = 15 m/S V2 = - 2. 8 m/s VI = Q V2 = 5 m/s here vi and is add uslocyties after collision. apply conservation of momentum miVit mavs = miVi + my v, =1 0 . 25 x 15 + 1 . 9 x ( 2- 8) = 0. 25 x V, + 1- 9 x 5 3. 75 4 - 5. 32 = 0 . 25 X V1 + 9.5 - 1. 57 - 9.5 G. 2 5 = - 44.28 m/s of , Vi = 49. 28 ( west ) And13 N W E L V = 3.3m/s added N I Vnorth = B. 8 mis m2 V' = 9 MI = 34 kg 63kg M2 = 39 kg combined velocity v = 32mis ( W ) student is going in perpendicular direction ". apply confovation of momentem in N-S direction. Initial velocity of both wild by o in N-S digjeti .. and Vini = 1-8 m/s Vinz = ?. mivi + my vg = mivi + mov, O + 0 = 63 X 1 . 3 + 34 v , ' = - 63 X 1 . 0 39 - 3. 335 m/s Vo 3 . 305 (South )mass of the can MI = 2000 kg speed of the cant V , = 24 mis maze of the truck ma = 3600 KG Speed of the touch v2 = 10 m/s touck ( east disection ) let the velocity of both cast and touch wid added just collision is casi ( sauth disection ) 19 sresultant speed the component of V in south direction apply energy congodgation in south directions ymivis = * ( mitmy ) Vsauth 3 200 0 X242 = (2000 + 3600) VSauth 2000 X 24x 24 = V's south 560 0 V sauth = 205. 71 VSauth = 14. 34 mis Apply enjoyy conservation in east direction 8 ma va? = ( mitm, ) x Yeast , 2 8600 x 10* = 5600 XVeast Veas + 3600 X 100 = 64 . 2 8 560 0 -: Resultant velocity of Both togather V=*t's V = N Usauth + Veast = 1 205-71 + 64.28 V = 16.43 m /s And