Vectors And Kinematics — Physics

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Question 1
MediumJEE

TheanglebetweentwovectorsAandBsuchthat∣A+B∣=∣A−B∣is:The angle between two vectors A and B such that |A + B| = |A - B| is:

A. 90°
B. 0°
C. 60°
D. 180°
Question 2
MediumJEE

The resultant of two forces of equal magnitude is equal to either force. The angle between them is:

A. 120°
B. 90°
C. 60°
D. 0°
Question 3
MediumJEE

A particle moves with constant speed v along a circular path of radius R. Its average acceleration over half revolution is:

A. 2v2/πR2v^{2}/πR
B. v2/Rv^{2}/R
C. zero
D. 2v2/R2v^{2}/R

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