A student throws a small ball vertically upward with an initial speed of from ground level
PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
A student throws a small ball vertically upward with an initial speed of 15m/s from ground level. Air resistance is negligible.
(i) Using an upward positive sign convention, state the magnitude and direction of the net force acting on the ball while it is moving upward.
(ii) Explain whether the acceleration of the ball changes in magnitude or direction during its upward journey. Give reasons.
(iii) At the instant the ball reaches its highest point, what are the acceleration and net force acting on it? Justify your answer.