Physics 6A Ch8Worksheet (1)

# Physics 6A Ch8Worksheet (1) - Physics 6A Ch 8 In Class...

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www.clas.ucsb.edu/staff/vince Physics 6A Ch. 8 – In Class Worksheet 1) At a city park, a person throws some bread into a duck pond. Two 4.00 kg ducks and a 9.00 kg goose paddle rapidly toward the bread, as shown in the sketch. If the ducks swim at 1.10m/s, and the goose swims 1.30m/s, find the magnitude and direction of the total momentum of the three birds. 2) A 0.144 kg baseball is moving toward home plate with a speed of 43.0 m/s when it is bunted (hit softly). The bat exerts an average force of 6.50 x 10 3 N on the ball for 1.30ms. The average force is directed toward the pitcher, which we take to be the positive x direction. What is the final speed of the ball? 3) A honeybee with a mass of 0.150 g lands on one end of a floating 4.75 g popsicle stick. After sitting at rest for a moment, it runs toward the other end with a velocity v b relative to the still water. The stick moves in the opposite direction with a speed of 1.20 cm/s. What is the velocity of the bee? Let the direction of the bee’s motion be the positive x direction.)

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Physics 6A Ch8Worksheet (1) - Physics 6A Ch 8 In Class...

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