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Physics Chemistry

Entry Test MCQ :: Motion and Force


  When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are
[A]. 5m/s, 1m/s[B]. 3m/s, 3m/s
[C]. 6m/s, 1m/s[D]. 4m/s, 2m/s

Answer: Option A


waqas said:    
 
explain this how ?

ahsan paracha said:    
 
Plz tell me about this situation

Ahsan KhAN said:    
 
Let say the two bodies are A and B. when two bodies come close to each other then: A + B= 6 And when go away from each other then: A-B=4 So A+ B=6 A-B=4 2A=10 A=5 Similarly B=1 SO answer is (5,1)

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