Question

An object of mass 120 kg is released from rest 480000 m above
the ground and allowed to fall under the influence of gravity.
Assume the gravitational force is constant, with g=9.8
m/sec^{2} , and the force due to air resistance is
proportional to the velocity of the object with proportionality
constant k= 3 kg/sec. Approximate the speed (in m/sec) of the
object when it strikes the ground.

Answer #1

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