# Recent content by SkiingAlta

12.55 n.

8895.15?
3. ### Last Minute Force Questions

So the other force acting would be the weight? Which would be 5.4 N. Subtract that from the upward force? I'm confused....
4. ### Last Minute Force Questions

Okay, so I use f=ma... F=.55*13 F=7.15 N That right? Now how should I start this?
5. ### Last Minute Force Questions

Hey all. Sorry for asking so many questions about force, but these are tricky to me! Okay so I have 2 questions that I have started, but have yet to complete. Help would be greatly appreciated. 1. A model rocket weighs 5.4 N. a) What is its mass? b) What applied force makes it...
6. ### Force/Kinematics Problems

Oh. That makes sense! Thanks so much for your help!
7. ### Force/Kinematics Problems

Awesome. Thanks so much for the help! One last one possibly? A brick has a mass of 1.2 kg. A force of 5.4 N just begins to move the brick along the floor with a constant velocity. What is the coefficient of static friction? So I would use f=μn 5.4=μ*11.76 μ=0.46 Would that be right...
8. ### Force/Kinematics Problems

And for the latter, F=ma F=75(-4) sumF= -300 Yay?
9. ### Force/Kinematics Problems

So for #2 if I were to do: Vf=Vi+at 200=0+a6 200=6a a=33.33333 Then: F=ma F=5000(33.333) F= 166,667 N Right?
10. ### Force/Kinematics Problems

Hey everyone. Struggling a little bit with a force test I have tomorrow. I've tried a few problems, and don't even know where to begin on another. I have the answers, and I would like to see if they are correct. Thank you so much! 1. An object of mass 70 kg is accelerated by a net force...
11. ### Is friction fμn?

Hi, I am a bit confused with all this friction stuff... How would I begin to solve this problem and by using what formulas? Thanks. Suppose a 65-kg boy and a 45-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the accelleration of the girl toward the boy...
12. ### Fundamental Identities

Homework Statement Okay, so this is some trig I learned last year but have since forgotten. If you can give me the first step, I can solve the rest on my own. The given statement is true and you have to prove why using Pythagorean Identities. csc2\alpha-1 = cos2\alpha ________ csc2\alpha
13. ### Kinematics Final Velocity Question

Oh duh. Lol. Thanks... I don't process information well at night. Haha. Thanks for the help, I really appreciate it. G'night to ya!
14. ### Kinematics Final Velocity Question

What is the direction of the velocity? Well I guess it doesn't really matter as long as its constant... i/e, you could call acceleration +9.8 as long as Vi was -2.0... Is that what you mean?
15. ### Kinematics Final Velocity Question

Sweet, so technically, since that is "gravity" withheld, the acceleration would be -9.8?