Questions
A particle is projected from horizontal making an angle of 530 with initial velocity of 100 . The time taken by the particle to make angle 45° from horizontal is
detailed solution
Correct option is C
Component (100 cos 530) 60 ms-1 will remain unchanged.Velocity will make 450 with horizontal when vertical component also becomes ± 60 ms-1.Using v=u+a t (In vertical direction) +60=80+(-10)t1∴ t1=2 s⇒-60=80+(-10)t2∴ t2=14 sTalk to our academic expert!
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