How much work is accomplished when a force of 300 n pushes a box across the floor for a distance of 100 meters?
a, 300 j
b, 30,000 j
c, 30,000 n
d, 300 n

Work is done when force is applied to an object and the object moved from one its distance ( one place to another )

so Work =  Force * Distance

if force is 300N and distance is 100m

then Work =  300 * 100 Nm( newton meter) =   30000J

( Joule = newton meter)