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CBSE Class 11-science Answered

can you please answer the following:
(i)What is the angle between velocity of projection and gravitational acceleration?
(ii)Explain polygon law of vector addition?
(iii)How will you get difference of two vectors?
Asked by aashu.60 | 20 Jul, 2015, 11:22: AM
answered-by-expert Expert Answer
(i) The angle between the velocity of projection and gravitational acceleration is always equal to the sum of angle of projection θ and 90°.
 
This is shown in the figure below:
 
 
The angle of projection is the angle between the velocity of projection and the horizontal axis (ground).
 
The gravitational acceleration always acts perpendicular to the ground in the downward direction.
 
Hence, the angle between the velocity of projection and gravitational acceleration is θ + 90°.

 
NOTE: Kindly post other questions as separate queries.
Answered by Romal Bhansali | 20 Jul, 2015, 01:43: PM

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