Question

19. The relative velocity of a body A with respect to a body B is 5 m/s. The absolute velocity of body B is 10 m/s. Both the bodies are moving in the same direction. What is the absolute velocity of body A? a) 10m/s b15m/s c) -5m/s d) 0 m/s

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Answer 1

Answer:

V(rel) = V(B) - V(A), if V(B) > V(A)

Therefore, V(A) = V(B) - V(rel)

= 10-5 = 5m/s.

But there is no option like that!

So V(A) > V(B).

Therefore, V(rel) = V(A) - V(B)

Therefore, V(A) = V(rel) + V(B) = 10+5 =15m/s.

Explanation:

As it is not given which body is moving faster, we should check it seperately and proceed as per the options given.