A40 kg girl and an 8.4 kg sled are on the surface of a frozen lake, 15 m apart. by means of a rope, the girl exerts a 5.2 n force on the sled, pulling it toward her.
(a) calculate the acceleration of the sled.
(b) calculate the acceleration of the girl.
(c) how far from the girl’s initial position do they meet, presuming a constant force? assume that no frictional forces act.

28. a stone is projected at a cliff of height h with an initial speed of 42.0 mls directed at angle θ0 = 60.0° above the horizontal. the stone strikes at a, 5.50 s after launching. find (a) the height h of the cliff, (b) the speed of the stone just before impact at a, and (c) the maximum height h reached above the grou

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.

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =