Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

In this, it takes 2 seconds to increase by 6 m/s. That means the acceleration was 6/2 m/s or 3 m/s.

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )