The clothing department of a store has a large mirror that consists of three flat mirrors, each arranged so that a person standing before the mirrors can see how an article of clothing looks from the side and back. suppose a ray from a flashlight shines on the mirror on the left. if the incident ray makes an angle of 65º with respect to the normal to the mirror’s surface, what will be the angle of the ray reflected from the mirror on the right?

a 45degrees
b 55 degrees
c 65 degrees
d 75 degrees

we need to know the time interval during which the force acts. impulse of force = momentum change

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.