A planet orbits a star in an elliptical orbit. At a particular instant the momentum of the planet is <-3.9 × 1029, -1.6 × 1029, 0> kg·m/s, and the force on the planet by the star is <-3.3 × 1022, -1.9 × 1023, 0> N. Find and . (Express your answers in vector form.)

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

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.

it is b. absorbs thermal energy