Read the scenario, then answer the questions. a 2 kg ball is thrown upward with a velocity of 15 m/s. what is the kinetic energy of the ball as it is being thrown? j what is the potential energy of the ball when it gets to its maximum height just before falling back to the ground? j

Explanation:

We have,

Mass of the ball is 2 kg and it is thrown upward with a velocity of 15 m/s.

It is required to find the kinetic energy of the ball as it is being thrown. The kinetic energy is possessed due to the motion of motion. It is given by :

Let potential energy of the ball when it gets to its maximum height just before falling back to the ground will be equal to the kinetic energy i.e. 225 Joules. As the energy of the system remains conserved.

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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