What are the dependent and independent variables in this problem?
Mr. Carlenitzeid wants to know if the location of the trash cans affects the number of pieces of trash left on the floor at the end of the school day. He tries for different arrangements of the trash cans, leaving the cans in those locations for one week for each arrangement. At the end of each day he counts in records have any significant piece of trash on the floor.

because growing process had stoped after 4-5 year

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.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y