A $2\mathrm{.}20N$ object is held $2\mathrm{.}20m$ above the floor for $10\mathrm{.}0s.$ How much work is done on the object during this time? Show your work.

A $60\mathrm{.}0kg$ student runs at a constant velocity up a flight of stairs. If the vertical distance of the stairs is $3\mathrm{.}2m,$ what is the work done against gravity? Show your work. $($Hint: $F_g=mg)$

A $10\mathrm{.}0kg$ object is accelerated horizontally from rest to a velocity of $11\mathrm{.}0\frac{m}{s}$ in $5\mathrm{.}00s$ by a horizontal force. How much work is done on this object? Show your work. $($Hint: $a=v_f-\frac{v_i}{}t)$