# A one dimensional...

• Jul 21st 2006, 11:36 AM
pocahontas
A one dimensional...
• Jul 21st 2006, 11:54 PM
CaptainBlack
Quote:

Originally Posted by pocahontas

a)The impulse is:

$\int_0^T \ F(t)\ dt$,

$T$, the duration over which the force is acting, so in this case it is the shaded area in the figure.

b)The average force is:

$\frac{\left(\int_0^T\ F\ dt\right)}{T}$

so is the shaded area divided by 0.14s.

RonL
• Jul 22nd 2006, 12:18 AM
CaptainBlack
Quote:

Originally Posted by pocahontas

(c) the change in momentum is equal to the average force times the duration,
or to the impulse. So the change in speed is the absolute value of the impulse
divided by the mass.

RonL