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Semmy [17]
4 years ago
7

Two ice skaters suddenly push off against one another starting from a stationary position. The 45-kg skater acquires a speed of

0.375 m/s relative to the ice. What speed does the 60-kg skater acquire relative to the ice?
Physics
1 answer:
timama [110]4 years ago
5 0

Answer:

Speed does the 60-kg skater acquire relative to the ice = 0.281 m/s

Explanation:

Momentum is conserved in this case.

Initial momentum = Final momentum.

Initial momentum = Initial momentum of skater 1 + Initial momentum of skater 2

Initial momentum = 45 x 0 + 60 x 0 = 0 kg m/s

Final momentum = 45 x 0.375 + 60 x u = 16.875 + 60 u

Here we need to find u.

We have

                  0 = 16.875 + 60 u

                   u = -0.281 m/s

Speed does the 60-kg skater acquire relative to the ice = 0.281 m/s

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