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Abrar
Questions (1)
A father is 4 times as old as his son. 5 years ago the sum of their age was 70. Find their present age.
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Answers (4)
Not helping
I want to this answer
M1 = 75, M2 = 30
Wrong! The answer has to be 7 m/s. Its just reverse logic. M1Vc + M2Vc = M1V1 + M2V2. Vc = 2, V1 = 0 (assuming it starts from rest), V2 = unknown, and thats what you are finding.
