Hard

Question

A body is moving with velocity 30 m/s towards east. After 10 second its velocity becomes 40 m/s towards north. The average acceleration of the body is

Options

A.1 ms-2
B.7 ms-2
C.√7 ms-2
D.5 ms-2

Solution

          
Velocity towards east direction,
Velocity towards north direction,
Change in velocity,
∴         = 50 m/s
Average acceleration,
    
    

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