PHY 231 Quiz: Quiz9_Mar22_SOL
42 views1 pages
Document Summary
Phy 231 quiz march 22, 2016 name_______________ section __________: a force acts on an object while it moves a distance d in a time t. Change in momentum = impulse = force x time. What does (change in energy)/(change in momentum) represent? (force x distance)/(force x time) = distance/time = average velocity: a block is released from rest on an incline, as shown. The coefficient of sliding friction is k . (sin. 37 = 0. 6, cos 37 = 0. 8 ) Please explain how to answer this question don"t do any algebra. Initial ke + initial pe = final ke + final pe + (friction force )*(round trip distance) The last term is the energy given to friction. The friction force is always in the opposite direction as the motion it can only remove energy from the block. The initial pe and final pe are the same, and the initial ke is zero, so the equation reduces to.
Get access
Grade+
$40 USD/m
Billed monthly
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
10 Verified Answers