Question

A motor car is going due north at a speed of 50km/h. it makes a 90 degree left turn without changing the speed. the change in velocity of the car is about

Answer 1

Heya.....!!!

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Given in the question :-

• Initial velocity = 50 m/s North

• Final velocity = 50 m/s West

→ In vector form :-

=> Initial velocity = 50 j^ ( j cap )
=> Final Velocity = - 50 i^ ( i cap )


→ Change in velocity ( ∆ v ) = Final velocity - Initial velocity :-

=> ∆ v = - 50 i^ - 50 j^

=> ∆ v = √( 50^2 + 50^2 )

♦=> ∆ v = 50√2 ( South - West ) m / sec



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