Reference no: EM132591264
If a 1017 kg car, moving at 9 m/s north, hits and sticks to a 1804 kg truck, moving at 6 m/s east, find the magnitude of the final speed.
Hint: here the masses are moving north and east (or in the x & y directions) - so it's a two dimensional problem. Just like all other two dimensional problems we need to separate the x and y motions, treat each separately, and the put the two directions back together. Use the "hit and stick" or inelastic formula use the inelastic collision formula in the x-dir, only using the x-components of the two velocitiesuse the inelastic collision formula in the y-dir, only using the y-components of the two velocitiesuse the Pythagorean Theorem to combine the x & y components so as to get the magnitude of the final velocityuse arcTan(vy' / vx') to get the direction of the final velocityif the angle doesn't end up in the first quadrant, then fix the angle
B. If a 1015 kg train car on a one dimensional track, moving at 6 m/s north, hits and bounces off a second train car with a mass of 2998 kg , moving at 5 m/s south, find the magnitude of the final speed of the first car (the second car will have a different speed, most probably in the opposite direction).
Hint: One dimensional problem, call north positive. Use the "hit and bounce" or elastic formula that goes with car #1
Also, a positive answer would indicate motion to the north and a negative answer would show southward motion - leave positive/negative in your answer.
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