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8. Two snowmobiles, Frosty and Snowflake, of equal masses suffer a rear-end collision. Just before the collision, Frosty's velocity is 25 m s-1 east and Snowflake's velocity is 10 m

s in the same direction. Just after the collision,Frosty is moving 13 ms-1 towards the east. a) What is Snowflake's velocity immediately after the collision? b) Was this an elastic collision? Justify your answer by calculation.

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