Recent content by chelseaalyssa

Okay, so if the system is the earth-ball (and the collision between the two)... I'm not sure if the gravitational force from the Earth on the ball is included in the system, or is counted as an external force?

The experiment only involves bouncing a ball on the ground (and detecting motion). Therefore, I am not sure if the system involves both the ball and the ground, or just the ball. Regarding momentum, I know that momentum is always conserved in a closed system, but not a system which is...

Homework Statement This question is related to an in-class experiment. The lab involves bouncing a ball and using a motion sensor which creates a graph representing the motion. The question is: Is the principle of conservation of momentum violated in this collision (the ball colliding with...

Oh ok - I see where I went wrong... Thanks for the help!

Homework Statement Show that the acceleration of a solid cylinder rolling down an incline that makes an angle (theta) with the horizontal is given by the equation: a=2/3 g sin(theta) Homework Equations Using the conservation of mechanical energy: 1/2 Mv2 + 1/2 I w2 + Mgh = 1/2Mv2 + 1/2...

ok thanks!

Homework Statement An object is released (from rest) at the top of an inclined plane. After time t, the object has moved a distance d down an incline. What is its acceleration Homework Equations There is some stuff written in regards to this question about using only time and distance...

Ok great, Thanks!

Also - does kg x m/s^2 equal Newtons?

The units of y = kg x m/s^2 Therefore, the units of b must equal kg x m/s^2 as well. In order for mx to have the same units as y, the units of m should be kg right? Thanks for your help!

Homework Statement In an equation of the format y=mx + b, where y=(m1-m2)g and x=acceleration (m/s2) ... what are the units for m and b? (I know that m is the slope and b is the y-intercept, but what do they mean?) Thanks :)

Okay thank you both for your help. I guess I just misunderstood the question, we have covered adding vectors in the course so I am able to do that. thanks again!

Homework Statement I am working on a lab, and I have come up with graphs (and the data set) for vy vs. time and vx vs. time, but I'm not sure how to determine v? I just need to come up with the equation so solve for v, but we haven't done anything calc oriented in the course yet...