Solveeit Logo

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 = OBOA\frac{OB}{OA}= 6480\frac{64}{80}= 45\frac{4}{5}

q = 370