Randall D. Knight — Kinematics in Two Dimensions: Problem Exercise_13

A physics student on Planet Exidor throws a ball, and it follows the parabolic trajectory shown in FIGURE EX4.13. The ball’s position is shown at $1\text{ s}$ intervals until $t = 3\text{ s}$. At $t = 1\text{ s}$, the ball’s velocity is $\vec{v} = (2.0\hat{i} + 2.0\hat{j})\text{ m/s}$. a. Determine the ball’s velocity at $t = 0\text{ s}$, $2\text{ s}$, and $3\text{ s}$. b. What is the value of $g$ on Planet Exidor? c. What was the ball’s launch angle?