![]() Which of the following numbers is the most precise estimate that you can obtain from your measurements for the area of your bedroom?ī. You measure the second wall to be 4.79 long. The tape, however, is too short to measure the length of the second wall, so you use a second tape, which is longer but only precise to 0.01. You use a tape that is precise to 0.001 and find that the shortest wall in the room is 3.547 long. ![]() Your bedroom has a rectangular shape, and you want to measure its area. The question is incomplete.the complete question is giving below "College Physics 10+5 pts energy of the bullet and block when they reach the maximum heighth energy of the bullet and block immediately after the colision O The initial kinetic energy of the bullet before the collision is equal to the potential o The initial kinetic energy of the bullet before the collision is equal to the kinetic the bullet immediately after the collision the potential energy of the bullet and block at the instant they reach the maximum O The initial momentum of the bullet before the collision is equal to the momentum of o The kinetic energy of the bullet and block immediately after the collision is equal to height h. Which of the following statements is true of the collision? o The initial momentum of the bullet before the collision is equal to the momentum of the bullet and block at the instant they reach the maximum height h. The velocity of the keys just before they were caught is -4.72 m/s (the keys were caught on their way down).Ī bullet moving with an initial speed of vo strikes and embeds itself in a block of wood which is suspended by a string, causing the bullet and block to rise to a maximum height h. The keys were thrown with an initial velocity of 10.0 m/s.ī) Now, using the equation of velocity we can calculate the velocity at t = 1.50 s: Then, using the equation of height, we can obtain the initial velocity. G = acceleration due to gravity (-9.81 m/s² considering the upward direction as positive)Ī) We know that at t = 1.50 s, h = 4.00 m and let´s consider that the origin of the frame of reference is located at the point where the keys are thrown so that h0 = 0. The equations for the height and velocity of the keys are the following: To me, this is an honest, cheerful and heartening story of skill, determination and community, and a welcome respite from the day-to-day barrage of bad news.A)The keys were thrown with an initial velocity of 10.0 m/s.ī)The velocity of the keys just before they were caught is -4.72 m/s (the keys were caught on their way down). The videos are of professional quality, well edited and scripted, and progress is fun to watch without requiring a huge amount of concentration… (it’s not like I am going to build my own boat tomorrow…)
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