Question

A stone thrown upward at an angle describes rectilinear motion​

Answer 1

Answer. In rectilinear motion, a particle covers motion in a straight path. But if we throw a stone at any angle (except 90°), it's path of motion is likely to bend. Thus, it becomes curvilinear motion

Answer 2

Answer. In rectilinear motion, a particle covers motion in a straight path. But if we throw a stone at any angle (except 90°), it's path of motion is likely to bend. Thus, it becomes curvilinear motion.