Woops, I'm sorry, I thought you had the displacement from the first 2.2s...
With the only known information being the variation of speed and time, you should use:
Vy = Vy0 + a.t
Where t is time. With the moon gravity obtained (which must be negative, make sure you get the signs right, and I...
With the information he was given, the following formula is better:
http://en.wikipedia.org/wiki/Torricelli%27s_equation
Vy^2 = Vy0^2 + 2aD
Where: Vy is the final speed, Vy0 is the initial speed, a is the acceleration, D is displacement. a is the only unknown, so this should be fairly...
Think about it...a mass at rest in a plane has forces acting in it. You have to assume there is a gravitational force, Earth's gravitational force to be more specific. There is also another force acting on the mass, called normal force.
Did you learn all of Newton's laws yet?
This problem is quite generic, uses Newton's laws. Do you have any formulas in your mind that could help you solve this problem? You need to show effort so the PF members can assist you. Forum rules.
Hm...I don't know in what country the OP lives in, but there are no real natural predator(s) of pigeons around Brazil. They are a real annoyance, and I see them pretty much as a plague: must be controlled. This isn't a very "hot" topic around here anyhow, so the solutions to control these birds...
The only conclusion I can draw from all this debate is that the problem wasn't really well elaborated. The person who thought about this problem was probably considering, in the context of kinematics, that the "water at the top of the dam" was merely standing still (as in the classical view, the...
Alright got it. As for the last line, I can understand that a2 << a1, because, in this case m1<<m2, and F (force applied on m1) >> F_kin. A force of small magnitude on a block of great mass accelerates the block at a much slower rate than a block of small mass pushed by a force of great magnitude.
This is what I'm experiencing right now in my university, basically. I pretty much "bombed" on the first trimester of physics (Classic Kinematics) due to lack of Calculus I knowledge and understanding. The courses were pretty much out of synchrony: while the Physics teachers were already...
Okay, for m1 in y-axis, it'd be: Fn_m2 = Fg_m1, since the only normal force here is coming from the other block.
As for m2, I don't really see why the forces drawn in a FBD for m2 for it don't match for my equation. There is the weight force from m1, and from m2 acting on it downwards and the...
Homework Statement
I'll describe this without the numbers, values and such. The issue here is to understand the logic worked on this problem...well any problem is like that. Anyhow, this is the situation:
A block of mass m1 is stacked on the surface of another block of mass m2 of width L...
"AIDS has a cure."
Sad situation, but many misinformed people (the ones from the ghettos in my country as an example) believe in such a thing I always thought that was common knowledge.
The maximum height isn't really important to determine the symmetry of the movement, what is important to determine that is: if particle b is shot from a height y_0, then if it lands at y, y_0 = y. In this case, I guess we have to assume the particle is being thrown from y_0 = 0, and when it...