Name: Collaborators: Energy and Momentum 1) A 3 kg cart is rolling with a velocity of vo = 5 - i on a horizontal track when a bit of dirt locks up one of the wheels giving the cart an effective coefficient of friction of Mk = 0.07. A) Use the "Work-Kinetic Energy Theorem: KE; + SF . dx = KE," to find how far the car travels after the wheel has locked. B) Use the "Law of conservation of Momentum: p; + J Fdt = pf" to find how much time the car is rolling with a locked wheel. C) Check your work above using the two different definitions of average velocity from back in chapter 3: Ax 2 7 = / and v = At 8 _ Dashboard 988 Calendar Notifications 37 To Do Inbox2) A block of mass m is placed on a frictionless ramp of mass M = 2m at a height h as shown. If the wedge is free to move on the horizontal table, how fast is each object moving once both objects touch the table? (To be clear, the blue ramp should move to the left because there is no friction anywhere.) - A - Cn) Dashboard Calendar E To Do Notifications Inbox