11. Momentum & Impulse
Elastic Collisions
11. Momentum & Impulse Elastic Collisions
6PRACTICE PROBLEM
A 3.5 kg sphere moving at 3.2 m/s collides with a second sphere of equal mass initially at rest. The direction of the first sphere changes by 20 degrees, and its new speed is 2.5 m/s. Express the lost mechanical energy as a percentage of the system's mechanical energy before the collision.
A 3.5 kg sphere moving at 3.2 m/s collides with a second sphere of equal mass initially at rest. The direction of the first sphere changes by 20 degrees, and its new speed is 2.5 m/s. Express the lost mechanical energy as a percentage of the system's mechanical energy before the collision.