2) Starting from our conservation of energy equation, Wnet ext = AEtotal, plug in the types of energy that are changing, and their formulas, until your expression includes the unknown vf and of of the block and spool. 3) Since the thread is unravelling from the spool, and we know that r,*ospool = Vblock, Use this relationship to eliminate of, and solve for the final velocity of the block. Does it match what you found earlier?

Can you please solve this problem and show all of the steps

Throw a tennis ball horizontally & let it hit the floor. We are interested in the energy from the moment just before you start to throw it un?l the moment just before its impact on the floor. (You can ignore the any bouncing or rolling.)  1)Draw an LOL Diagram 2)What is the energy model equation? 3)Will energy be conserved? (i.e., does ΔEsys =0?)

Part A What is the horizontal force on the skater? Express your answer with the appropriate units. F = Submit Part B 0 μÅ Value Request Answer Units What is the ratio of this force to the skater's weight? ?

I included two pictures. Please show me how to approach the problem in the correct manner based on the feedback given. It is okay to completely change the answer if you need to. Please give a reasoning to why the claim is not reasonable and the work needed to back this up.

1. A cart of mass 2.4 kg rolls without friction on the track shown. At point A the cart is moving at 7.0 m/s. Use g = 10 m/s?. a. What is the cart's speed at point B? В 3.3 m 1.7 m 0.3 m b. Does the cart make it to point C? If it does, determine the cart's speed at that point. If it does not make it to point C, determine the maximum height it reaches.

I need help with 2a and 2b

A horizontal carousel is rotating around its axis with constant angular velocity w. On the carousel there is a straight track passing through its middle. A cart of mass m is traveling along the track with constant velocity v relative to the carousel. Note that there is friction between the cart and the carousel. FR XR

The moon revolves around the Earth in a nearly circular orbit, kept there by the gravitational force exerted by the Earth. Gravity does which of the following on the moon… A. Positive Work B. Negative Work C. No Work

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