Abriefcase sits stationary in an elevator. the mass of the briefcase if 4.5 kg. the elevator then begins accelerating upwards at 1.10 m/s^2. what is the normal force on this briefcase during this acceleration?
44.155 n
38.971 n
51.141 n
48.985 n

an obstruction

another example of kinetic energy would be,

kinetic energy   >     moving energy

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

hope that !                                         : )

high-sugar diet and high cholesterol