JIPMER2014PhysicsMotion in One Dimension

A particle moves towards east for 2 s with velocity 15 ~m / s and move towards north for 8 s with velocity 5 ~m / s . Then, average velocity of the particle is

Options

A1 ~m / s
B5 ~m / s
C7 ~m / s
D10 ~m / s

Correct answer

B. 5 ~m / s

Step-by-step solution

Distance covered towards east =2 15=30 ~m Distance covered towards north =8 5=40 ~m Total displacement = 40^2+30^2 =50 ~m aligned Average velocity & = Total displacement Total time & = 50 2+8 =5 ~m / s aligned

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