An object is at x = 0 at t = 0 and moves along the x axis according to the velocity–time graph in figure p2.50.(a) what is the object’s acceleration between 0 and 4.0 s? (b) what is the object’s acceleration between 4.0 s and 9.0 s? (c) what is the object’s acceleration between 13.0 s and 18.0 s? (d) at what time(s) is the object moving with the lowest speed? (e) at what time is the object farthest from x = 0? (f) what is the final position x of the object at t = 18.0 s? (g) through what total distance has the object moved between t = 0 and t = 18.0 s?

1.in one challenge on the titan games, competitors have to lift 200 pounds up a long ramp. angel is able to move the weight in 42 seconds. anthony gets it done in only 38 seconds. which statement is true? angel has more power than anthony. angel does more work than anthony. anthony does more work than angel. anthony has more power than angel. 2.a mountain climber exerts 41,000 j of work to climb a cliff. how much power does the climber need if she wants to finish in only 500 seconds? power = work / time 20,500,000 watts 82 watts 0.0122 watts 41,500 watts 3.your family is moving to a new apartment. while lifting a box 83 joules of work is done to put the box on a truck, you exert an upward force of 75 n for 3 s. how much power is required to do this? (hint: you only need two of the 3 numbers given! ) power = work / time 249 watts 25 watts 2075 watts 27.7 watts

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles