You are asked to analyze the efficiency of a new battery
Powered
toy, and in your assessment,
you are told you need to comment
on and calculate its efficiency
A)what measurements would you
need to collect to do a complete
assessment of the new toy?
B)How Could the information
gathered help you comment
On the efficiency of the toy?

prolly a beacuse the momentuem the car has increases while going down hill

does anyone know or what?

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.