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In a second soccer match, in order to 10m / s to do a straight-line movement in football, was an ath

408,442,9412010-03-31 03:11:11 +0000 #1
in a second soccer match, in order to 10m / s to do a straight-line movement in football, was an athlete flying from kick, soccer in the 0.2s in size to change the speed of 20m / s reverse fly, if the football in this period of time to do uniform variable motion, then the soccer acceleration, direction.
long been waiting for this day2010-03-31 03:24:43 +0000 #2
this title applied impulse theorem, the product of force and role of the time for the momentum change, and also because the acceleration equals force divided by mass, that is, Ft = m (V initial + V at the end). a = F / m. namely a = (V initial + V end) / t algebraic solution of a = 150m/s2 direction and fly in the same direction.
alone_people2010-03-31 03:32:41 +0000 #3
a = 150m/s2 the direction of athletes playing in the same direction

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