Velocity If a stone is thrown down at 110 ft/s from a height of 1,150 feet, its height after t seconds is given by s = 1,150 - 110t - 16t. (a) Find its average velocity over the period [1, 4]. X ft/s (b) Estimate its instantaneous velocity at time t = 4. X ft/s

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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.