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A runner of mass 62.3 kg starts from rest and accelerates with a constant acceleration of 1.11 m/s2until she reaches a velocity of 7.5 m/s. She then continues running with this constant velocity.
a) How far has she run after 52.1 seconds?
b) What is the velocity of the runner at this point?
Water flowing through a garden hose of diameter 2.79 cm fills a 24.0-L bucket in 1.30 min. What is the speed of the water leaving the end of the hose
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He is unable to get to the other side because of a lack of friction between his shoes and the ice. How long does it take him to reach the south shore
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When 165 V is applied across a wire that is 14 m long and has a 0.31 mm radius, Find the resistivity of the wire
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Assume that at sea-level the air pressure is 1.0 atm and the air density is 1.3 kg/m3. What would be the height of the atmosphere if the air density were constant
If particles 2 and 3, even though not rigidly bound together, are regarded as forming a composite body of mass 2m located at their mid-point r = (1/2)*(r_2 + r_3), find the equations describing the motion of the two-body system comprising particle..
Chris spends his spare time running a bungee jumping service off the Henley Street bridge. He has a 123 ft long bungee cord (unstretched) that has a spring stiffness of 34 lb/ft. To test his bungee, he ties the bungee cord to the bridge railing, t..
A boy throws a rock horizontally with a velocity of 7.0 m/s from a bridge. It falls 26 m to the water below. What is the magnitude of the velocity of the rock just before it hits the water
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A 800-N passenger in a car presses against the car door with a 200N force when the car makes a left turn at 13 m/s. The (faulty) door will pop open under a force of 800N.Of the following, the least speed for which the passenger is thrown out of the c..
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