# newtons law

• Jan 29th 2009, 11:24 AM
Leona_Marie
newtons law
f = 5(9.8 m/s^2) f =49
why 100=m(9.8 m/s^2) m=10.2 can somebody please explain newtons law m/s^2 a= acceleration in meters per second squared m/s^2
and the mechanics in using this.
• Jan 29th 2009, 09:54 PM
princess_21
Quote:

Originally Posted by Leona_Marie
f = 5(9.8 m/s^2) f =49
why 100=m(9.8 m/s^2) m=10.2 can somebody please explain newtons law m/s^2 a= acceleration in meters per second squared m/s^2
and the mechanics in using this.

Newton's law F=ma

in ur second question
Quote:

why 100=m(9.8 m/s^2) m=10.2 can somebody please explain newtons law
the unknown is m, the formula for that is $\displaystyle m=\frac{f}{a}$

$\displaystyle f = ma$

$\displaystyle \frac{f}{a} = \frac{ma}{a}$

$\displaystyle \frac{f}{a}=m$

$\displaystyle 100=m(9.8m/s^2)$

$\displaystyle \frac{100}{9.8}m/s^2= m$

$\displaystyle 10.2 = m$ :)
• Jan 30th 2009, 06:05 AM
Leona_Marie
Quote:

Originally Posted by princess_21
Newton's law F=ma

in ur second question

the unknown is m, the formula for that is $\displaystyle m=\frac{f}{a}$

$\displaystyle f = ma$

$\displaystyle \frac{f}{a} = \frac{ma}{a}$

$\displaystyle \frac{f}{a}=m$

$\displaystyle 100=m(9.8m/s^2)$

$\displaystyle \frac{100}{9.8}m/s^2= m$

$\displaystyle 10.2 = m$ :)

thank you prinsess, you havent failed me yet, always giving me the straight answer that was right in front of my face the whole time. Id give you credit but there was no thanks box.
• Jan 30th 2009, 11:09 PM
princess_21
it's always my pleasure helping you, Leona Marie :)