Posted by **Sarah** on Wednesday, June 10, 2009 at 1:39pm.

In outer space, a constat net force of magnitude 140 N is exerted on a 32.5 kg probe initially at rest. (a) what acceleration does thie force produce? (b) how far does the probe travel in 10.0 s...

I got a which equals 4.31 m.s^2 but how do i solve for b

- Physics -
**MathMate**, Wednesday, June 10, 2009 at 2:18pm
Use

S=ut+0.5at^{2}

S=distance travelled

u=initial velocity (=0)

t=10 s.

a=4.31 m/s/s

g is not involved because it is in outer space.

- Physics -
**Sarah**, Wednesday, June 10, 2009 at 2:32pm
where did you get the 0.5 ??

- Physics -
**MathMate**, Wednesday, June 10, 2009 at 2:35pm
actually the formula says

S=ut+at^{2}/2

(ut plus half at^{2})

I now realize that the 0.5 is confusing.

- Physics -
**Sarah**, Wednesday, June 10, 2009 at 2:35pm
and i did 0(10) + 0.5(4.31 m/s/s)(10)^2= 225.5 and that is not right because the answer is 215

- Physics -
**MathMate**, Wednesday, June 10, 2009 at 2:40pm
You may have put in the wrong number on the calculator, because 431/2=215.5 ≈ 215

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