5. Projectile Motion
Negative (Downward) Launch
1PRACTICE PROBLEM
An open lift is descending at a steady speed of 2.5 m/s relative to the ground as shown in the figure below. A person in the lift throws a small box horizontally outward from the lift with a speed of 10.0 m/s. Determine the magnitude and direction of the initial velocity of the box relative to a person standing on the ground.
![](https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/99ec8351-7b4f-4327-bb11-3ae27909d2e0)
An open lift is descending at a steady speed of 2.5 m/s relative to the ground as shown in the figure below. A person in the lift throws a small box horizontally outward from the lift with a speed of 10.0 m/s. Determine the magnitude and direction of the initial velocity of the box relative to a person standing on the ground.