Recent content by hotshot1kille

So then what point is my point of reference, and i tried it but still nothing. Can someone do it and show how they got the right answer??

Homework Statement A wolf wanders 64 m [N15E], 93m[N20W], and 167 m [N]. What is her displacement? North to South east is considered positive by my sign convention, and from south to north west, it is considered to be negative, once again by my sign convention. I've never seen problems like...

Oh ok i see your point of view. Thank you so much i will fix it and get back to you.

Yea what we did in class was that they were already made. We just got up and took one, the lab says it has to be roughly within 1.2- 1.5m. I told my teacher i have about 1.1m, and he said it is fine, because like the 0.1m won't make a big difference for such a small calculation. He also...

So average time is : (23.41+23.41+23.44) / 3 = 23.42 period= (23.42)/10 = 2.342 so then gravity would equal to 4∏^2 (1.12m) --------------- = g 2.342^2 g= 8.06 m/s^2 does this seem fine?

Homework Statement We did a lab using a pendulum attached to a string about 1.12m long. We let it go from 20 degrees and counted 10 cycles and recorded how much time it took for the pendulum to complete 10 cycles. This lab is done assuming, there is no air resistance or any other force other...

ok thank you

ahh ok thank you so much!

Ok got it thanks :)

Homework Statement An airplane maintains a constant acceleration of 4.0m/s^2 as it speeds up from 16m/s [E] to 28 m/s [E]. A what is the average velocity? b) how long does the airplane accelerate? c) when is the instantaneous velocity equal to the average velocity for the interval? a= 4.0...

OH OK, thank you so much. I finally now get it!

tell me if I'm doing anything wrong, \Delta d = V_{i}\Delta t + ( 1/2)a(\Delta t)^2 delta t = -11.11 +- sqrt (11.11)^2 -4(1/2)(-9.8)(-4.74) --------------------------------------------- -9.8 -11.11+- sqrt 30.5281 ----------------------...

did you use v1= 0 or 11.11?

The answer is 11m and t= 0.569875104 or t= 1.697471834. if distance = speed * time and speed is 11.11m/s dist= 11.11 * 0.569875104 dist= 6.331312405 (6.3m) and the other one is just wayy off.

I tried doing this and still got the wrong answer :S