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    sgm1996's Avatar
    sgm1996 Posts: 19, Reputation: 1
    New Member
    		  
    #1

    Oct 1, 2012, 05:44 PM
    Constant speed physics
    One swimmer in a relay race has a 0.50 s
    Lead and is swimming at a constant speed of
    4.26 m/s. The swimmer has 59.7 m to swim
    Before reaching the end of the pool. A second
    Swimmer moves in the same direction as the
    Leader.
    What constant speed must the second
    Swimmer have in order to catch up to the
    Leader at the end of the pool?
    Answer in units of m/s
    Abhimanyu Pudi's Avatar
    Abhimanyu Pudi Posts: 77, Reputation: 4
    Junior Member
    		  
    #2

    Oct 2, 2012, 12:36 AM
    Since the second swimmer is behind the leader by 0.5 s, this says that he should reach the end point in 13.51 s as it takes 14.01 s (59.7 / 4.26) for the leader to do the same.

    It is given that they are moving with constant velocity (remains same throughout the race), velocity of the second swimmer can be calculated as

    velocity = distance traveled / time taken to travel that distance
    = 59.7 / 13.51 = 4.42 m/s
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