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Briefly justify your answer:2. (15 points) Block C moves to the right with a velocity of2 m/s, and block B moves down with a velocity of 1.5 m/s.What is the velocity of block A?
3. (10 points) A ball of mass mis travelling with aninitial speed vo. It hits a block B that has mass Mandthat is initially at rest, then block B runs into a spring.Is the linear momentum of the system conserved inany direction(s)? If so, draw directions on the figureabove and state the directions for which momentum isconserved.Which of the following are true?T FThe kinetic energy of the ball before the impact will equal the potential energy of the spring when it is fully compressed by the blockT FThe total mechanical energy of the system (combined ball and block) is the same immediately before and immediately after the impactWhat is the primary assumption we make when we solve an oblique impact? 4.(10 points)An airplane has an acceleration equal to 2Cbv(m/s2), where Cand bknown constants. Set up the integral(s) you would use to determine the distance it takes him to go from 300 km/hr to 500 km/hr. (don’t solve, just set it up)are
5. (30 points)A 0.5 kg ball of negligible size is fired up a verticaltrack of radius 1.5 m using a spring plunger with k = 500 N/m. Whatis the distance sthe plunger must be pulled back and released so theball will begin to leave the track when θ = 135°. 6. (25 points)Two small balls, each of mass m = 0.12 kg, hang fromstrings of length L = 1 m. Ball A is released from rest with= 30o. As aresult of the initial collision, Ball B swings through a maximum angle of25o. Determine the coefficient of restitution for the impactAB
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