Mary finishes a marathon at a speed of 2 m/s. If her acceleration period is 4 seconds, then what is her average
acceleration (in m/s?)?

Explanation:

v2 = v1 + at

v2 final speed

v1 initial speed

a acceleration

t time

2 = 0 + 4 a

a = 1/2

another example of kinetic energy would be,

kinetic energy   >     moving energy

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

hope that !                                         : )