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Chapter 02, Problem 011 You are to drive to an interview in another town, at a distance of 310 km on an expressway. The interview is at 11:15 a.m. You plan to drive at 100 km/h, so you leave at 8:00 a.m. to allow some extra time. You drive at that speed for the first 120 km, but then construction work forces you to slow to 41.0 km/h for 43.0 km. What would be the least speed needed for the rest of the trip to arrive in time for the interview? Number Units the tolerance is +/-2%
euretion it of a patcie moving along an x axis is x·500-8.00e2 with x in meters and r in seconds. (a) At what time and (b) where does the particle ) stop? At what (c) negative time and (d) positive time does the particle pass through the origin? (a) Number (b) Number (c) Number (d) Number Units Units Units
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-chapkr07, Problem oli trme of mtervreu, 11:15 am mt 8:00 am = consuchom worK g:00 a AB; 120Km → BL: 43 Km CDs? AS, tagS ooKm/h start tA 1) So, fr mohon log Km/h, AB 2) sumjthc least sPeda a< uwe Know, 2 So Su D= 1,001 hr So, te forcn krvrco !」 So> O, the leas t sked needed to· teach in hme cp- 145-14 kmNet queshon, Ven dt dt , rf hejarh.cle momen tath stop.. 少 v-omg so, A at t0setendi. o part Cb) as uwc Know, at t-04, the parhtle shop msmentant so, rt Posrhon would be, 2t-o) s.oo - 8-0o Lo)Sm2 -+ 0.79 s 8 2. -0-74 r.

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