Question
Question: A particle is projected up the inclined such that its component of velocity along the incline is 20 ...
A particle is projected up the inclined such that its component of velocity along the incline is 20 m/s. Time of flight is 4 sec. Horizontal displacement of the particle in 4 sec is 64 m. The angle made by the incline with the horizontal is –
A
300
B
370
C
530
D
Data is insufficient
Answer
370
Explanation
Solution
OA = 20 m/s × 4 s = 80 m
OB = 64 m
cos q = OAOB= 8064= 54
q = 370