waddup+water+polo

Jk, not waddup waterpolo, but its actually called

BALLS TO THE WALL

Daniel and Daniel

Goal: Find how much energy is lost in the collision between a tennis ball and a wall

Procedure: 1. Find the mass of the tennis ball 2. Throw the tennis ball at a slow, medium, and fast rate. (record with camera) 3. Put video into logger pro and figure out the velocities of the ball before and after it hits the wall. 4. Plug into the projectile equation. 5. Use our answers to make a conclusion about our project.

Slow, Medium, Fast, in that order. media type="file" key="Slow.MOV" width="300" height="300"media type="file" key="Medium1.MOV" width="300" height="300"media type="file" key="Fast.MOV" width="300" height="300" Slow, Medium, Fast (left, right, down)

CONCLUSION- We believed that if we threw balls against the wall with different initial velocities from the same distance, the Kinetic Energy would change at the same rate depending on the increase or decrease in velocity. As the initial velocity of our throws increased, the work the wall did on the tennis ball also increased. As the work increased, the final velocity of the ball decreased. As shown by the picture below, the wall did an amount of 18.19 Joules of energy on the ball when it had an initial velocity of 4.45 meters per second. The wall did 17.402 Joules of work when the ball had a velocity of 5.14 meters per second, and 26.48 Joules of work when the ball had an initial velocity of 6.66 meters per second. As this data shows, the higher the initial velocity of the ball being thrown, the more work being done by the wall while the kinetic energy of the ball is conserved. This makes sense from a physics perspective, as the wall must do work on the ball and lower its velocity in order for the ball to bounce back. Each ball at different velocities did work on the ball respective to the velocity the ball was thrown at.

Data Evidence/work

Reasoning