Recent content by macgirl06

Don't know what I am doing wrong An adventurous dog 7.50 kg dog runs onto a frozen, frictionless pond with an initial velocity of 4.31 m/s along the positive x-axis. The dog slides across the ice while being pushed by a steady wind with a force of 16.1 N in the positive y-direction. What is...

k got it, just a calculational error on my part. Thanks again for the clarification...:)

there is no other way to find a new velocity it just takes me back to square one...I keep on getting 0.372 grams for my mass of rope...which other way can I find velocity

ok i got that from the formula: vsquared = T\u and u= m\L (mass over length) and these are equations in my physics textbook used for waves.

its mass...

I did exactly what you are telling me and I am not getting the answer. I am doing M=ukmg*L\v*squared and ukmg is my Force tension that I calculated. These are my values that I am putting in uk= 0.2000 m= 53.6 kg g= 9.8 v= 1.14 L=4.60 It seems like a very easy question but I don't know...

Oliver (m=90.0 kg) uses a 4.60 m long rope to pull Jordan (m=53.6 kg) across the floor (μk=0.200) at a constant speed of 1.14 m/s. Jordan signals to Oliver to stop by "plucking" the rope, sending a wave pulse forward along the rope. The pulse reaches Oliver 149.0 ms later. What is the mass of...

I got it, it was just a calculational error. Thanks for the clarification!

I have tried that many many times, are you sure there arent any tricks to this question or something you have overlooked?

I did the following: (0.0058kg)(721 m/s) - (0.0058kg)(349m/s) \ 0.744 kg and that didnt work and thnks for the fast reply

When a bullet traveling at 721 m/s strikes a block of wood originally at rest on a frictionless surface, the bullet emerges from the other side of the block of wood traveling at 349 m/s. If the mass of the bullet is 5.38 g and the mass of the block is 744 g, what is the speed of the block after...

I have attached the diagram, its a word document

I am having trouble with this question, I know what I need to find, just don't know what route to take. A 53.0 g tennis ball with an initial speed of 30.5 m/s hits a wall and rebounds with the same speed. The figure below shows the force of the wall on the ball during the collision. What is...

help I still don't understand, what would I do with y=mx+b once I find it, how can I find time?