4. [01.03]
which is the best example of newton's second law of motion?

a student has on roller skates and she decides to push against the railing. she immediately begins to roll backwards.
a small, lightweight ball and a large, heavy ball are dropped off of a roof. they both strike the ground at the same time.
a baseball player hits a baseball that is pitched to him. the ball immediately soars back in the direction of the pitcher.
you are riding in a car that makes a quick right turn. you immediately slide across the back seat.

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.

Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic