as an unread romance novel falls off the top of a building it speeds up until it hits the ground. as the…

as an unread romance novel falls off the top of a building it speeds up until it hits the ground. as the book is falling its kinetic energy ___, its potential energy ___, and its total energy ___. neglect the effects of air resistance. a increases; decreases; increases b increases; decreases; decreases c decreases; increases; is constant d increases; decreases; is constant

as an unread romance novel falls off the top of a building it speeds up until it hits the ground. as the book is falling its kinetic energy ___, its potential energy ___, and its total energy ___. neglect the effects of air resistance. a increases; decreases; increases b increases; decreases; decreases c decreases; increases; is constant d increases; decreases; is constant

Answer

Explanation:

Step1: Recall energy - conservation principle without air - resistance

When the book falls from the top of the building, its height (h) decreases. The gravitational potential energy is given by (U = mgh) (where (m) is mass, (g) is the acceleration due to gravity and (h) is height), so the potential energy decreases.

Step2: Analyze kinetic energy

As the book falls, its speed (v) increases. The kinetic energy is given by (K=\frac{1}{2}mv^{2}), so the kinetic energy increases.

Step3: Analyze total energy

Since there is no air - resistance, the total mechanical energy (E = K + U) is conserved.

Answer:

A. increases; decreases; is constant