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Questions  

A stone is projected with a velocity 102ms1 at an angle of 45° to the horizontal ground. The average velocity of stone during its time of flight is 

a
10 ms−1
b
105ms−1
c
55ms−1
d
20 ms−1

detailed solution

Correct option is A

Average velocity = displacement  time =RT                          =Ucos ⁡θTT=Ucos ⁡θ

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