The formula for height (in feet) of a projectile under the influence of gravity is given by ℎ = − + + where = (in seconds), is the upward initial velocity (at = 0), and is the starting/initial height. 2) imagine, you are throwing tennis ball at a kite that is stuck 42 feet up in a tree, trying to knock it loose. you can throw the ball at a velocity of 45 feet per second upward at a height of 4 feet. will you throw read the kite? how hard do you need to throw ball to reach the kite? explain your answer using equations, solutions, and graphs.

their crystal patterns have been disrupted by stress

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.