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...Study material for bsc mathematics dynamics semester vi academic year unit content page nr i projectiles ii collision of elastic bodies iii simple harmonic motion iv under the action central force v differential equations orbits definition angle projection is that direction in which particle initially projected makes with horizontal plane through point velocity trajectory path describes range on a and where meets time flight interval elapse from instant till when again projectile let be o u at an to horizon take as origin upward vertical axes respectively initial can split into two components are cos using component constant throughout there no acceleration subject g down wards p position t secs after then distance described seconds y sec sin transfer equaon paral latusrectam whose axis downwards vertex s latus rectum m ucos...