A body moves along the east with velocity 20 km h-1 and then due north with velocity of 15 km h-1 The resultant velocity is a. 5 km h-1 b. 15 km h-1 c. 20 km h-1 d. 25 km h-1
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Explanation:
R=square root(v1^2+v2^2)
R=square root(400+225)
R=square root (625)
R=25 km/h
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