Question

a car going due north at 20√2 ms^1 turns right through an angle of 90° without changing speed . The change in velocity of car is?​

Answer 1

Answer:

Initial velocity = v

i

​

=50j

FInal velocity =v

f

​

=−50i

Change in velocity = Δv=v

f

​

−v

i

​

=−50i−50j

Negative x- means west direction and negative y-component means south direction. Hence resultant velocity is in southwest direction.

Magnitude of change in velocity =  

(−50

2

)+(−50

2

))

​

 = 70. 71 km/h