Which statement best describes the motion of objects in free fall?

A. Objects in free fall accelerate at a constant rate toward Earth's
center,

B. Objects in free fall accelerate at an increasing rate toward Earth's
center

C. Objects in free fall start by accelerating and then travel at
constant speed toward Earth's center,

D. Objects in free fall travel at a constant speed toward Earth's center.

need to see circuit to get time constant

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.