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Unformatted text preview: acceleration. d) Find the velocity when the cart has moved a distance of 5m down the ramp as shown. You will need to find the time. Show your reasoning. e) Now find the same final velocity using energy and “work.” Show your reasoning using the work energy relation. f) Now do one more thing. Find the final velocity using the vertical height (3m). Multiplying mg times this height gives the “change in potential energy” and also equals the -∆ KE as found in e. ∆ PE = mg ∆ h and ∆ h is negative so ∆ PE is a negative number. ∆ KE is the negative of ∆ PE so ∆ KE is a positive number and means that KE increased. 3m 5m 4m a = F net = x y...
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This note was uploaded on 12/21/2010 for the course PHYS Physics 21 taught by Professor Larrywatson during the Fall '08 term at North Dakota.
- Fall '08