A 9 kg object starting from rest falls through a viscous medium and experiences a resistive force R = −b v, where v is the velocity of the object. The acceleration of gravity is 9.8 m/s^2. a) If the object’s speed reaches one-half its terminal speed in 5.24s, determine the terminal speed. Answer in units of m/s. b) At what time is the speed of the object threefourths the terminal speed? Answer in units of s. c) How far has the object traveled in the first 5.24s of motion? Answer in units of m.

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.