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September 1, 2015

Homework Help: physics

Posted by Emily on Tuesday, September 4, 2012 at 8:08am.

A landing craft of mass 12000 kg prepare itself for moon landing. when at a vertical distance 160m above the moons surface its downward velocity is 15 m/s. a retrorocket is fired to give the craft an upward thrust to slow its speed to zero as it meet the surface.calculate the needed thrust to decelerate the craft its initial downward velocity to zero as it lands.

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