Aball is thrown onto a rough floor at an angle theta. if it rebounds at an angle phi and the coefficient of kinetic friction is determine: (a) the coefficient of restitution e. (b) further simplify the expression if theta = phi = 45°. (c) from the previous part, determine the coefficient of friction if = 0.6. neglect the size of the ball. hint: show that during impact, the average impulses in the x and y directions are related by = . since the time of impact is the same, δ = δ or = .

the answer is kevlar

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.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).