A trampoline is an example of potential energy and another example would be a A) kinetic; windmill C) elastic; rubber band B) chemical; battery D) gravitational; roller coaster

(2) The box with M = 40kg shown below is being pulled by two pulleys exerting forces F₁ = 400 N (0₁ = 60°) and F₂ = 200 N (0₂= 15°) up an incline with an angle 0₁ = 30°. If the uk = 0.15. What is the acceleration of the box? Would the F₁ or F₂ be enough alone to pull the box up if the other pulley would stop working?

Answer last question "what is the ball's velocity when it returns to the ground?"

The perpendicular vectors that can be added together to form a vector are called its:     pieces     constituents     components     compatriates     companions

+y mg +x Surface is frictionless Pulley is massless and frictionless

Problem 4: Speed deamplifier. In the figure above on the right, block 1 of mass m1 slides along an x-axis on a frictionless floor at speed 4 m/sec.Then it undergoes a one-dimensional elastic collision with stationary block 2 of mass m2 = 2m1. Next, block 2 undergoes a one-dimensional elastic collision with stationary block 3 of mass mz = 4m1. What then is the speed of block 3? Answer: 16 m/sec or 1.78 m/sec.