Question

A ball is thrown vertically upwards from the ground and a student gazing out of the window sees it moving upward past him at The window is at 15 m above the ground level. The velocity of ball 3 s after it was projected from the ground is:

Answer 1

Explanation:

A ball is thrown vertically upwards from the ground and a student gazing out of the window sees it moving upward past him at 10 ms−1. The window is at 15 m above the ground level. The velocity of ball 3 s after it was projected from the ground is (take g=10 ms−2) A .