4. Calculate the weight of the following objects on Earth (assume 8 = 10 N/kg). a) 12 kg b) 500 g c) 20 g d) What is the mass and weight of each of the objects if they were placed on mars ? (g mars =3.8 N/kg

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.

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.