Recent content by Physicshelpneeded

THANKS visipavia, that helped alot...thank u too john dubya

it looks like all the information u posted is factoral and important...but unfortunately I am only in physics 1, lol...and we're not even getting close to what equations n stuff u just told me...u r telling me about change in energy and the question doesn't ask that, asks for energy at end...

Force, work, and energy problems! :mad: k I am kind of pissed off because i just started getting the hang of this physics stuff and understanding everything going on with momentum, acceleration and velocity changes, etc... but now that we moved on to forces, energy, and work, its been...

HELP! energy and work TROUBLE! :confused: :frown: ...im very worried about my current lesson in class because it has me completely stumped! One questions asks... Two objects move with different masses from rest and are pulled by the same magnitude net force and move through the same...

hey again all! When given the following information, what equation do you use to solve this and should the answer be around .02 N? A superball (very bouncy) of mass .05 Kg is dropped onto a table top. Its speed as it hits the table top is 6.0 m/s. It bounces off the table and rises to...

ok, thanks a lot for ur help guys, but i still don't understand why time is given but cannot be used. but maybe it IS a trick question and it is put there for that reason. -Thanks again, Arabian Knight (Sari)

(a) is poorly stated, in the sense that the impulse is independent of the time spent (It is simply M(vf-vi)) if this is true arildno...then my equation is fine as long as i take away the time right? does anyone else know how to do this or help? (b) Assuming you did the correct algebra...

This question kinda stumped me :frown: ... Suppose that a ball of mass 0.25 Kg is moving downward at a speed of 15 m/s when it lands in your hand. (a) If it takes .15 s to bring it to rest in your hand, what is the net impulse your hand exerts on the ball to bring it to rest? Give both size...

keyword u said : SHOULD know the mass...but we dont! :mad: so i sat thinking about it for about 20 mins...and my conclusion was this: is it possible to use F = M x A to find out the mass first...then use the same equation to find the net force? what i did was as follows: F = M x A...

im turning in my homework with the answer to this as a solid, STRAIGHT, and HORIZONTAL line above the zero mark... just curious - did i get it right? :) ...or wrong? :rolleyes:

im having problems with this particular question... the problem asks: Two forces are applied to the cart with two different spring scales as shown below. The spring scale F1 reads 2.0 N. The cart moves toward the right with an acceleration toward the right of 1.50 m/s/s. (a) What is...

Acceleration/time graphs! Hey all... I'm having tons of trouble with what seems to be an extremely easy question. :mad: The question portrays a toy car...which can move in either direction along a horizontal line (the + position axis) The car is given a large force toward the right of...

wow, thanks a lot Doctor Al...that really helped me alot! :biggrin: ill do everything u suggested and see how it works out - thanks again :smile:

ok...at least now i have an idea of what a spring scale IS...but i still have no idea how to go about solving this problem...anyone have any ideas? :frown:

hey all... Im having trouble with a question here that asks when only 2 forces act on an object (1: 8.0 to the right, 2: 12.0 N to the left) draw a scale diagram to determine the magnitude and direction of the resulting NET force. anyone know how to do this? anyone know how to draw a...