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At time t0 = 0, a particle P1 of mass m is projected vertically from the ground with speed v0 > 0. If no collisions occur, this particle would reach its maximum height h1 at time t = t1. At time...

If S is the circumcentre of the triangle ABC and if forces act along SA,SB,SC respectively proportional to BC,CA,AB. Show that their resultant passes through the incentre of the triangle.

An ice hockey puck is struck from one end of the rink to the other end of length 27m. The initial speed is 6m/s and the puck rebounds of the boundary fence on the other side at a speed 0.75 times...

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