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An object A is kept fixed at the point x=3 m and y=1.25 m on a plank P. At time t=0, the plank starts moving along the +x - direction with an acceleration 1.5 m/s2. At the same instant, a stone is project from the origin with a velocity →u as shown. A stationary person on the ground observes the stone hitting the object during its downward motion at an angle of 45∘ to the horizontal. All the motions are in x−y plane. The velocity →u is |
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Answer» An object A is kept fixed at the point x=3 m and y=1.25 m on a plank P. At time t=0, the plank starts moving along the +x - direction with an acceleration 1.5 m/s2. At the same instant, a stone is project from the origin with a velocity →u as shown. A stationary person on the ground observes the stone hitting the object during its downward motion at an angle of 45∘ to the horizontal. All the motions are in x−y plane. The velocity →u is |
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