- #1

- 30

- 0

How much mechanical energy dissipates in the collision?

I calculated the final velocity (-1.93 m/s) but I don not know where to go after that

- Thread starter emeraldempres
- Start date

- #1

- 30

- 0

How much mechanical energy dissipates in the collision?

I calculated the final velocity (-1.93 m/s) but I don not know where to go after that

- #2

- 38

- 0

Momentum is always conserved. That leaves just one thing that

- #3

Doc Al

Mentor

- 45,025

- 1,323

Compare the initial total KE of both sandwiches to the final KE.

- #4

- 30

- 0

the initial ke of a is

a: ke= .5(.5)(-3.5^2)= 3.0625

b: ke= .5 (.2)(2^2)= 1

and the final ke is ke= .5(.5+.2)(-1.93^2)= 1.304

I had all these and subtract them from eacj other and got -2.76

- #5

- 38

- 0

- #6

- 30

- 0

- #7

Doc Al

Mentor

- 45,025

- 1,323

Redo that second calculation.the initial ke of a is

a: ke= .5(.5)(-3.5^2)= 3.0625

b: ke= .5 (.2)(2^2)= 1

- #8

- 30

- 0

thanks. i went back through my math and found an error, the answer is -2.16 J

- Replies
- 8

- Views
- 12K

- Last Post

- Replies
- 6

- Views
- 814

- Last Post

- Replies
- 8

- Views
- 829

- Last Post

- Replies
- 1

- Views
- 578

- Replies
- 1

- Views
- 13K

- Last Post

- Replies
- 16

- Views
- 1K

- Last Post

- Replies
- 3

- Views
- 7K

- Last Post

- Replies
- 13

- Views
- 4K

- Last Post

- Replies
- 1

- Views
- 190

- Replies
- 4

- Views
- 21K