- #1

divgrad

- 2

- 0

Here is the given problem:

http://img213.imageshack.us/img213/6781/problemtk6.jpg

Here is my incorrect solution:

http://img152.imageshack.us/img152/6698/solutionzm3.jpg

Why should distance even matter for the final velocity in this problem since once the spring is uncompressed, the cart will continue at a steady velocity forever since there is no friction or air resistance?

The answer for (a) is 1.47 m/s, and the answer for (b) is 1.35 m/s. Again, why would the velocity be less for part (b) when there is no energy loss from either friction or air resistance?

http://img213.imageshack.us/img213/6781/problemtk6.jpg

Here is my incorrect solution:

http://img152.imageshack.us/img152/6698/solutionzm3.jpg

Why should distance even matter for the final velocity in this problem since once the spring is uncompressed, the cart will continue at a steady velocity forever since there is no friction or air resistance?

The answer for (a) is 1.47 m/s, and the answer for (b) is 1.35 m/s. Again, why would the velocity be less for part (b) when there is no energy loss from either friction or air resistance?

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