SUMMARY
The average acceleration of a 45.0-g Super Ball, which rebounds from a brick wall after traveling at 30.0 m/s and rebounding at 20.5 m/s, is calculated to be 13600 m/s². This calculation is based on the change in velocity over the time interval of 3.70 ms during which the ball is in contact with the wall. The confusion regarding the sign of acceleration arises from the interpretation of velocity changes, where the ball's deceleration upon impact is followed by an increase in velocity in the opposite direction.
PREREQUISITES
- Understanding of basic physics concepts such as velocity and acceleration
- Familiarity with the formula for average acceleration: (final velocity - initial velocity) / time
- Knowledge of units of measurement, specifically meters per second (m/s) and milliseconds (ms)
- Ability to convert mass from grams to kilograms for calculations involving force
NEXT STEPS
- Study the kinematic equations related to motion and acceleration
- Learn about the principles of momentum and impulse in physics
- Explore the effects of elastic collisions on objects
- Investigate the use of high-speed cameras in motion analysis
USEFUL FOR
Students studying physics, educators teaching mechanics, and anyone interested in the dynamics of bouncing objects and acceleration calculations.