iPad 31% 9:24 p.m. webassign net PH101 Homework Assignment 2 Serway, Physics 0/1

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iPad 31% 9:24 p.m. webassign net PH101 Homework Assignment 2 Serway, Physics 0/1 points I Previous Answers Pg 2. y Notes o Ask Your Teacher An athlete swims the length L of a pool in a time ti and makes the return trip to the starting position in a time t2. If she is swimming initially in the positive x-direction, determine her average velocities symbolically forthe following. (Assume that time t2 is from the other end of the pool to the starting point. Use any variable or symbol stated above as necessary. Do not substitute numerical values; use variables only. Indicate the direction with the sign of your answer.) (a) the first half of the swim (b) the second half of the swim (c) the round trip. (d) What is her average speed for the round trip? eed average

Explanation / Answer

a -- v avg = L/t1 i

b-- v avg= -L/t2 i

c-- v avg=(1/2) (L/t1-L/t2)i

d - v avg= 2L(t1+t2)

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