The pilot of an airplane executes a constant-speed loop- the-loop maneuver in a vertical circle as in figure 7.13b. the speed of the airplane is 2.00 x 102 m/s, and the radius of the circle is 3.20 x 108 m. (a) what is the pilot's apparent weight at the lowest point of the circle if his true weight is 712 n? (b) what is his apparent weight at the highest point of the circle? (c) describe how the pilot could experience weightlessness if both the radius and the speed can be varied. note: his appar- ent weight is equal to the magnitude of the force exerted by the seat on his body. under what conditions does this occur? (d) what speed would have resulted in the pilot experiencing weightlessness at the top of the loop?

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.

the right answer is 0.3 meters per second