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A 50 kilogram ice skater glides across the ice in a straight line at 7 meters per second.
If she bends down and scoops up a 20 kilogram child standing on the ice, what will be the final speed of the skater and the child?
a) 1 meter per second
b) 3 meters per second
c) 5 meters per second
d) 7 meters per second
Ans- 5 Meters per second
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