SCAN0027 - /’ 3 How high will a 2.0 kg rock go if it is...

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Unformatted text preview: /’\ 3. How high will a 2.0 kg rock go if it is thrown straight up by a person who does 100 J of work on it? \ §as “Md W0“: ham K\ 4. A 120 kg crate is pulled across the floor with a constant force of 500 N that is applied at an angle of 25 degrees above the horizontal. For the first 20 m of travel the floor is frictionless and for the next 20 m of travel the coefficient of kinetic friction is 0.25. a. What is the speed of the crate after 20 m of travel? b. What is the speed of the crate after 40 In of travel? 5 N 7’ fl‘P $0 at) a: Foosé 3 30033823; gjemlS 20m ’2 ’ Z 2. Mg‘fi MLLJS \I — \f0 “—23%" V2, 0 2 2 mega) b vamzftgrs szngsi‘G9 V: V?13.72)?0W“I‘23\m}fi Via N’ ’ZOOCQEJ‘SCOKSWZQ= Clem/V ("k/u N= .18C%U.7j:;zq,,2/V . A m: F0089*%: sooMSZSJL/t‘ — ZMSN a: Ewe “ w” ’-77mf52 L 2:236/ n .._- m 1209 ' V” \/ :- 32 2(,.77)(23y(/2.3) Z V: M. firm is }' ...
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