a person throw a bottle into a dust bin at the same height as he is 2m away at the angle of 45 degree.the velocity of thrown is A)g B)root g C)2g D)root 2g
a person throw a bottle into a dust bin at the same height as he is 2m away at the angle of 45 degree.the velocity of thrown is A)g B)root g C)2g D)root 2g
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Verified answer
• According to given question :
Answer is V =
Thrown at an angle of 45°
Let the initial Velocity of bottle be V
Time of Flight : = here,
Now, using
as there is only gravity as acceleration
so no acceleration in X- Direction
So S=ut
where u is V Cos∅ where ∅ = 45°
and t =
and Dustbin is at 2m So
2 = ×
So V =
___________________
How Time of Flight is Derived
from
S = 0 , so
t=2u/g