Physics - Kinematics Question with Solution | TestHub

A particle A is thrown with initial velocity 5 m/s along a frictionless inclined plane of inclination $\beta$. Another particle B is thrown with initial velocity 10 m/s at an angle $\alpha$ with the horizontal at the same moment when A is thrown. Both the particle meet again on the inclined plane. The value of $\left(\frac{\pi }{\alpha +\beta }\right)$ is