Recent content by watsup91749

Homework Statement Which one of the following statements is true concerning the motion of an ideal projectile launched at an angle of 45 degrees to the horizontal? ok so, it seems simple enough, this was a multiple choice questions and i narrowed it down to 2 solutions: 1) the speed at the...

you guys are awesome, thanks a ton :D

if you mean like v(f)=v(i) + at, then i can't use that because i don't have the acceleration or the final velocity, the force that acts on it is external so...am i confusing my self here?

Homework Statement The force exerted on a 10kg mass is given by F=10 + 2t where the units are SI. If the mass starts from rest, its velocity after 2s is: A) 14 m/s B) 2 m/s C) 2.4 m/s D) .2 m/s E) .24 KM/S Homework Equations F=ma thats it? The Attempt at a Solution At 2 secs the...

Well, it says "perfect inelastic collision" so I am assuming they stick,thats what my books says. So, then for the inelastic collision the answer is A, but for elastic collisions the answer is B? Does anyone know what the "collision between elastic and inelastic" means and can help me figure it out?

Homework Statement 2 equal masses travel in opposite directions at equal speeds. They collide in a perfectly (inelastic) collision. Just after the collision their velocities are: A)Zero B)equal to their original velocities C)equal in magnitude but opposite in direction of their original...

I think the answer is B momentum, is that right? momentum has p=mv and kinetic energy has the same variables, so it must be B right? Also K=mv^(2-1) would be the same as K=mv which is the the same as momentum, is this correct?

Derivative of the kinetic energy... Homework Statement If you take the derivative of the kinetic energy of a particle with respect to its velocity you get... A) force B) momentum C) acceleration D) mass E) potential energyHomework Equations K= .5mv^2 The Attempt at a Solution Im in pre calc...

hello, I am new and I am really just starting out in physics, but i have a question that my textbook doesn't address yet gives some problems on. This is a sample problem, it deals with banking during circular motion. "Circular freeway entrace and exit ramps are commonly banked to handle a car...