Question

HElp help

Answer 1

1. A cart moving at 10 m/s is brought to a stop by the force plotted in the force-time graph shown here. Find the impulse and the approximate mass of the cart. Show all your work.

Answer 2

Well
\[ F = ma = m \frac{dv}{dt} \ \Rightarrow \ F \ dt = m \ dv\]

You can calculate F dt from the graph--it's basically a rectangle.

And you know dv = -10 m/s and from this you can solve for m

Answer 3

what would dt be again?

Answer 4

delta t, the change of time.
\[ F . \Delta t \] is also called the impulse.

Answer 5

would the dt be 4.5?

Answer 6

y

Answer 7

because on the graph you can see it started at 0 and ended at 4.5 therefore it would be the change in time correct or incorrect?

Answer 8

y

Answer 9

do you mean why ? or something else?

Answer 10

I mean y = yes

Answer 11

thank you :D

Answer 12

http://www.csupomona.edu/~skboddeker/131/notes/c9.htm