A car is moving on a straight road due north with a uniform speed of 50 km h–1 when it turns left through 90º. If the speed remains unchanged after turning, the change in the velocity of the car in the turning process is
A
zero
B
50 
km h–1 S-W direction 50 
km h–1 S-W
km h–1 S-W direction 50 km h–1 S-W
C
50 
km h–1 N-W direction 50 
km h–1 N-W
km h–1 N-W direction 50 km h–1 N-W
D
50 km h–1 due west. 50 km h–1
Text Solution
Verified by ExpertsThe correct answer is:
B
Initial velocity = 50 
Final velocity = –50 
1 change = 
along south west
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