Question

17. A dinner plate falls vertically to the floor and breaks up into three pieces, which slide horizontally along the floor. Immediately after the impact, a 320-g piece moves along the +X-axis with a speed of 2.00 m/s and a 355-g piece moves along the +y-axis with a speed of 1.50 m/s. The third piece has a mass of 100 g. In what direction relative to the +x-axis does the third piece move? (a) 39.8º from the +x-axis (b) 36.9° from the +x-axis (c) 39.9° from the +x-axis (d) 216.9° from the +x-axis (e) 219.8° from the +X-axis

Answer 1

Option e 219.8 degree with positive X axis is the correct answer. I have rounded the result upto one decimal.

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(The plate falls vertically to the floor Lafter broken doon it" slides horizontally As the plate falls or vertically so it has no horizontal component of momentum, so momenteem horizontal PH =0 It brrakes into 3 pieces let say mis 320g ; ve zmys and moves along x ani m2 = 355g ; 22 = 1.5m/s and mover along Yaris m₂ = 100g V2 = ? and direction ? As before collision net y horizontal moment eum is zero Ima so after collision net morizontal momenten will be also zero P + P + P = 0 0 P = mivi a moment un of Ist particle P2 = mavz = momentem of 2nd particle P2 = mg Ug a momentum of 3rd particle . BE:-( B to - osa

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