300
A painter is working at 100 ft from the ground and drops his paint brush onto the street below. The function s(t)=-16^2+100 gives the height of the paintbrush as it falls to the ground. The velocity at time, t=2 sec, is given by lim t->2 (s(2)-s(t))/(2-t). Evaluate this limit to find the velocity of the paintbrush at 2 seconds.
What is -64 ft/sec