- #1

- 7

- 0

44 kg / 8 m/s=5.5

30 kg / 8m/s=3.75

5.5+3.75=9.25m/s

- Thread starter Crichar1
- Start date

- #1

- 7

- 0

44 kg / 8 m/s=5.5

30 kg / 8m/s=3.75

5.5+3.75=9.25m/s

- #2

- 1,100

- 0

What do you know about mechanics that will help? Any equations?

The Bob

The Bob

- #3

- 49

- 0

Think momentum.

- #4

- 7

- 0

i tried the linear momentum equation..mass * velocity and the answer was still incorrect

- #5

- 1,100

- 0

But what did you do to get this incorrect answer?

The Bob

The Bob

- #6

- 7

- 0

44kg x 8m/s= 352

30kg x 8m/s=240

352-240=112m/s

didn't seem right but i thought i would try it anyways

- #7

- 1,100

- 0

So... try imagining the woman and the skateboard as one mass

The Bob

- #8

- 49

- 0

Conservation of momentum. The total momentum before she jumps on the board=total momentum after she jumps on the board.i tried the linear momentum equation..mass * velocity and the answer was still incorrect

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