Physics 6A Ch2Worksheet

# Physics 6A Ch2Worksheet - PHYSICS 6A Ch.2 In Class...

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www.clas.ucsb.edu/staff/vince/ PHYSICS 6A Ch.2 - In Class worksheet 1) A kingfisher is a bird that catches fish by plunging into water from a height of several meters. If a kingfisher dives from a height of 7.0m with an average speed of 4.00 m/s, how long does it take for it to reach the water? 2) You drive 4.00mi at 30.0 mi/h and then another 4.00 mi at 50.0 mi/h. Is your average speed for the 8.00 mi trip (a) greater than 40.0 mi/h (b) equal to 40.0 mi/h (c) less than 40.0 mi/h? 3) An athlete sprints 50.0 m in 8.00 s, stops, and then walks slowly back to the starting line in 40.0 s. If the “sprint direction” is taken to be positive, what is (a) the average sprint velocity, (b) the average walking velocity, and (c) the average velocity for the complete round trip? 4) A train moves in a straight line with an initial velocity of 0.50 m/s. It accelerates at 2.0 m/s 2 for 2.0 seconds, coasts with zero acceleration for 3.0 seconds, and then accelerates at -1.5 m/s 2 for 1.0 second. (a) What is

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## This note was uploaded on 09/09/2011 for the course PHYS 6a taught by Professor Stanek during the Spring '07 term at UCSB.

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Physics 6A Ch2Worksheet - PHYSICS 6A Ch.2 In Class...

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