Introductory Conservation of Mechanical Energy Problem using a Trebuchet

The video tutorial explains how to calculate the final speed of a tennis ball launched from a trebuchet using the conservation of mechanical energy. The instructor guides students through identifying initial and final points, setting the horizontal zero line, and deriving the energy equations. The tutorial emphasizes the importance of writing out all potential energy types to avoid mistakes. It also discusses why projectile motion equations are not applicable due to the lack of directional information. The final speed is calculated to be 8.5 meters per second.

How do you calculate the final velocity of the ball just before it strikes the ground?

What is the final speed of the ball as calculated in the problem?

Why can't we use projectile motion equations to solve this problem?