(numbers 19-20) A 60.0 kg person stands at the left end of a 4.0 m long uniform iceboat of mass 40.0 kg. At t=0 the iceboat and person move together as a unit in the +x direction at 3.2 m/s. The surface below the iceboat is frictionless and initially the left end is at x = 0. 19. Find the center of mass position for the person / iceboat system at t = 0. a) 0.8 m b) 1.0 m c) 1.2 m d) 1.6 m e) 2.0 m 20. The person runs to the right, reaching the right end of the iceboat at t = 1 second. What is the position of the left end of the iceboat at this time? a) 0.00 m b) 0.20 m c) 0.40 m d) 0.60 m e) 0.80 m

(numbers 19-20) A 60.0 kg person stands at the left end of a 4.0 m long uniform iceboat of mass 40.0 kg. At t=0 the iceboat and person move together as a unit in the +x direction at 3.2 m/s. The surface below the iceboat is frictionless and initially the left end is at x = 0. 19. Find the center of mass position for the person / iceboat system at t = 0. a) 0.8 m b) 1.0 m c) 1.2 m d) 1.6 m e) 2.0 m 20. The person runs to the right, reaching the right end of the iceboat at t = 1 second. What is the position of the left end of the iceboat at this time? a) 0.00 m b) 0.20 m c) 0.40 m d) 0.60 m e) 0.80 m

Name: 19-20. Please help answer these two questions that relate to each othe
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Description: 19-20. Please help answer these two questions that relate to each other, thank you so much!! :)) (numbers 19-20) A 60.0 kg person stands at the left end of a 4.0 m long uniform iceboat ofmass 40.0 kg. At t = 0 the iceboat and person move together as

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter6: Momentum And Collisions

Section: Chapter Questions

Problem 8WUE: A car of mass 750 kg traveling at a velocity of 27 m/s in the positive x-direction crashes into the...

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A car of mass 1 560 kg traveling east and a truck of equal mass traveling north collide and become entangled, moving as a unit at 15.0 m/s and 60.0 north of east. Find the speed of (a) the car, and (b) the truck prior to the collision. (See Section 6.4.)
Two bumper cars at the county fair are sliding toward one another (Fig. P11.54). Initially, bumper car 1 is traveling to the east at 5.62 m/s, and bumper car 2 is traveling 60.0 south of west at 10.00 m/s. They collide and stick together, as the driver of one car reaches out and grabs hold of the other driver. The two bumper cars move off together after the collision, and friction is negligible between the cars and the ground. a. If the masses of bumper cars 1 and 2 are 596 kg and 625 kg respectively, what is the velocity of the bumper cars immediately after the collision? b. What is the kinetic energy lost in the collision? c. Compare your answers to part (b) from this and Problem 54. Is one answer larger than the other? Discuss and explain any differences you find.
Two metersticks are connected at their ends as shown in Figure P10.18. The center of mass of each individual meterstick is at its midpoint, and the mass of each meterstick is m. a. Where is the center of mass of the two-stick system as depicted in the figure, with the origin located at the intersection of the sticks? b. Can the two-stick system be balanced on the end of your finger so that it remains lying flat in front of you in the orientation shown? Why or why not? FIGURE P10.18 (a) The center of mass of the stick on the x axis would be at (0.5 m, 0), and the center of mass of the stick on the stick on the y axis be at (0, 0.5 m), assuming the sticks are uniform. We can then use Equation 10.3 to find the x and y coordinates of the center of mass. xCM=1Mj=1nmjxj=12m[m(0.50m)]=0.25myCM=1Mj=1nmjyj=12m[m(0.50m)]=0.25m The location of the center of mass is (0.25m,0.25m) (b) No. The location of the center of mass is not located on the object, so your finger would not be in contact with the object. In a different orientation, balancing by applying a force at the center of mass might be possible, but not in the orientation shown.
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A water molecule consists of an oxygen atom with two hydrogen atoms bound to it (Fig. P8.36). The angle between the two bonds is 106. If the bonds are 0.100 nm long, where is the center of mass of the molecule? Figure P8.36
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A 2-kg object moving to the right with a speed of 4 m/s makes a head-on, elastic collision with a 1-kg object that is initially at rest. The velocity of the 1-kg object after the collision is (a) greater than 4 m/s, (b) less than 4 m/s, (c) equal to 4 m/s, (d) zero, or (e) impossible to say based on the information provided.