science
Grade-11
Easy
Question
If a dog swims across the river with 3 m/s and the river's speed is 4 m/s. Find the velocity of the dog.
- 5
- 3
- 2
- 6
Hint:
5 m/s
The correct answer is: 5
Given:
The velocity of dog w.r.t river (Vdr) = 3j ms-1
The velocity of river water (Vr) = 4i ms-1
To find:
Actual velocity of dog = ?
Solution:
Vdr = Vd - Vr
Answer:
The actual velocity of the dog = 5ms-1
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