What happens to a fuse to stop the flow of charges through it?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

Carbon 14 is a naturally occurring stable