A sledgehammer with a mass of 10 kg is used to drive a spike into wood. The spike has a
mass of 1 kg. The blow from the sledgehammer exrts a force of 1000 N downward on the
spike.
What force does the spike exert upward on
the sledgehammer?

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

Atank holds 1000 gallons of water, which drains from the bottom of the tank in half an hour. the values in the table show the volume v of water remaining in the tank (in gallons) after t minutes.t(min) 5 10 15 20 25 30v(gal) 694 444 250 111 28 0(a) if p is the point (15, 250) on the graph of v, find the slopes of the secant lines pq when q is the point on the graph with t = 5, 10, 20, 25, and 30.(b) estimate the slope of the tangent line at p by averaging the slopes of two secant lines.(c) use a graph of the function to estimate the slope of the tangent line at p. (this slope represents the rate at which the water is flowing from the tank after 15 minutes.)show all steps.

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.