2/22 Energy and Momentum Test A 70 kg person is brought to a stop by their seatbelt. If the seatbelt applies 600 N of force over a
period of 2 seconds, what was the original velocity of the person (and the car they were riding in)?
O O mis
17.1 m/s
O 17 mis
O 8.5 m/s
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d is the answer i came up with

answer; (arch); good luck

wavelength divides in half and speed stays the same.

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.