0 pts
1 pts
2 pts
3 pts
(N/A)
1. Immediately before B hits A 2. Immediately after B hits A 3. Max compression of spring
4 pts
n direction is perpendicular to the surface of A (either up or down) and t is either left or right
Clearly identifying the use of Work-Energy (or some other appropriate method) to find velocity of A at stage 2.
Kinetic Energy of A at Stage 2 in terms of velocity of A.
Kinetic Energy of A at Stage 3 which is 0.
Gravitational Potential Energy of A at Stage 2.
Gravitational Potential Energy of A at Stage 3.
Spring Potential Energy at Stage 2.
Spring Potential Energy at Stage 3.
Some indication that there is no work being done between stage 2 and 3 (unless you treat this out of
Solve for the velocity of A at stage 2.
5 pts
Identifying that the t component of the velocity of B does not change between stages 1 and 2
Correct use of the conservation of Linear Momentum of the system of A and B in the n direction between stages 1 and 2 and setting up each term properly.
Solve for the n component of the velocity of B at stage 2.
Correct use of the Coefficient of Restitution equation to solve for e.
Solving for the magnitude of the velocity of B at stage 2.