An old clock has a spring that must be wound to make the clock hands move. which statement describes the energy of the spring and hands of the clock?

a)
the spring has kinetic energy and the hands have kinetic energy.

b)
the spring has kinetic energy and the hands have potential energy.

c)
the spring has potential energy and the hands have potential energy.

d)
the spring has potential energy and the hands have kinetic energy.

D

Explanation:

When the spring is wound, then it gathers potential energy in the form of tension energy. As it slowly unwinds, the potential energy is converted to kinetic energy of the hands' movements of the clock. This energy is channeled through the use of cogs/gears in the clock.

he made 11 calls in one day

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.