Arocket rises vertically, from rest, with an acceleration of 3.2 m/s2 until it runs out of fuel at an altitude of 950 m. after this point, its acceleration is that of gravity, down­ ward. (a) what is the velocity of the rocket when it runs out of fuel? (b) how long does it take to reach this point? (c) what maximum altitude does the rocket reach? (d) how much time (total) does it take to reach maximum altitude? (e) with what velocity does it strike the earth? (/) how long (total) is it in the air?

uranium fissions/breaks up giving out energy and neutrons

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.

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