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A 4.0 kg ball is located at x= 4.0m, y= 0m. A 6.0 kg ball is located at x= 2.0m, y= 4.0m, and a 3.0 kg ball s located at x= -1.0m, y= -2.0m.
a. What is the location of the center of the mass of this system?
b. If the 4.0 kg ball is moving in the positive x-direction at 5.0 m/s, the 6.0 kg ball is moving in the positive y-direction at 8.0 m/s, and the 3.0 kg ball is moving in the negative x-direction at 3.0 m/s, what are the x and y components of the velocity of the center of mass of the three balls?
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A 8760-kg car is travelling at 27.8 m/s when the driver decides to exit the freeway by going up a ramp. What is the magnitude of the average drag force exerted on the car
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you and a friend are pulling on a box at 90 degree angles to each other. You are pulling with 80 pounds of force, Calculate the resultant force of pull and the angle of pull from the zero angle
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A person of mass 75 kg stands at the center of a rotating merry-go-round platform of radius 3 m, Calculate the rotational kinetic energy of the system of platform plus person before and after the person's walk
An electron is suspended at a distance of 1.38 cm above a uniform line of charge. What is the linear charge density of the line of charge. Ignore end effects.
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