The following questions are from the group work during the week of 12/7 to
12/11. Include worked out solutions for each
problem. These may be screenshots from
your PearDeck, but must be your own work
(you have to write it out, you can’t just
submit someone else’s screenshot)

the answer would be 32*f

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.

conservation of mass

mass before something happens = mass afterwards

god i hope this !