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...
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...
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...
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...
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
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?
One more question if you can help:
You throw a ball downward from a window at a speed of 2.0 ms. How fast will it be moving when it hits the sidewalk 2.5m below?
Simple enough right? So my question is.... is it the initial velocity or final velocity that is 2.0? Wouldn't it be initial...
Okay, so to find acceleration, I used Vf=Vi+at
Setting the Vf as 88 and the Vi as 68.
Algebraically solving the equation, I found the acceleration to be 1.67. I then plugged into Vf2=Vi2+2ad
Getting my result, 934.13 meters. Is this correct?
Hi all. New to the forums. Rookie to Physics. I know this is a really simple question, but I am struggling with it. Help would be greatly appreciated.
Q: Determine the displacement of a plane that experiences uniform acceleration from 66 m/s to 88 m/s in 12s.
Wouldn't I use...