Two ice skaters, with masses of 77 k g and 53 k g ,stand facing each other on a
ID: 1291622 • Letter: T
Question
Two ice skaters, with masses of 77kg and 53kg ,stand facing each other on a 14-m-wide frozen river. The skaters push off against each other, glide backward straight toward the river's edges, and reach the edges at exactly the same time. Part A How far did the 77kg skater glide?Two ice skaters, with masses of 77kg and 53kg ,stand facing each other on a 14-m-wide frozen river. The skaters push off against each other, glide backward straight toward the river's edges, and reach the edges at exactly the same time. Part A How far did the 77kg skater glide?
Two ice skaters, with masses of 77kg and 53kg ,stand facing each other on a 14-m-wide frozen river. The skaters push off against each other, glide backward straight toward the river's edges, and reach the edges at exactly the same time. Two ice skaters, with masses of 77kg and 53kg ,stand facing each other on a 14-m-wide frozen river. The skaters push off against each other, glide backward straight toward the river's edges, and reach the edges at exactly the same time. Two ice skaters, with masses of 77kg and 53kg ,stand facing each other on a 14-m-wide frozen river. The skaters push off against each other, glide backward straight toward the river's edges, and reach the edges at exactly the same time. Part A How far did the 77kg skater glide?
Part A How far did the 77kg skater glide?
Part A How far did the 77kg skater glide?
Explanation / Answer
final momentum = initial momentum
Pf = Pi
(77*v1) - (53*v2) = 0
v1 = 0.69 v2
-----------------
d2 = v2*t==> t = d2/v2
d1 = v1*t = v1*(d2/v2)
d1 = 0.69*d2
d1 + d2 = 14
0.69d2 + d2 = 14
d2 = 12.31
d1 = 1.69 m
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