Projectile Motion

Question

Maria throws a ball straight up with an initial velocity of 10 m/s. What is its velocity when it returned to the elevation from where it was thrown? Please explain your answer.

Answer 1

The velocity at the highest point is zero being the point where the movement changes from going up to going down. The acceleration near the earth's surface due to gravity is g (9.81 m/s²)and is not changed by the velocity if the aerodynamic forces are neglected.