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Question: lrogers 1216 universityofmanitobadesire2learncom 1 a car is traveling along a...

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lROGERS 12:16 universityofmanitoba.desire2learn.com 1 A car is traveling along a straight road at a velocity of +35.4 m/s when its engine outs out. For the next 1.45 seconds, the car slows down, and its average acceleration is for tbe next 650 seconds, the car slows dewn further, and its average acceleration is a.The velocity of the car at the end of the 795-second period +26 3 mh The ratio of the average acceleration values is aa-1 Find the velocity of thie car at the end of the initial 1.45-second interval. 2. The intiall velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each othe objects, ansuming that the time elapsed since 0ss20s Initial velocity Acelerston 12m 13m 13m 2m 3.3 mv 3.3m 3. A race driver has made a pit stop to refuel. After refueling, he starts from rest and leaves the pit area with an acceleration whose magnitude is 5.7 ms: after 4.0 s he enters the main speedway. At the ame instam, another car on the speedway and traveling at a constant velocity of 65.0 m/s overtakes and passes the entering car. The entering car maintains its acceleration. How much time is required for the enterin car to catch up with the other cari Along a straight road through town, there are three speed-imit signs. They occur in the following order 65, 31, and 24 mih, with the 31 -mith sign located midway between the other two Obeying these speed limits, the smallest possible time ta that a driver can spend on this part of the is to travel between the first miyh and between the second and third gns at 3 mi/h. More realisticaly, a driver could slow down from 65 to 33 mih with a constant deceleration and then do the same thing from 31 0 24 mih. This altemative requires a time to Find the ratio a/t S You are on a train that is traveling at 3.0 m/s along a level straight track Very near and parallel to the track is a wall that slopes upward at a i2 angle with the horizontal. As you face the window ( 0.798 high, 230 m widel in your compartment, the train is moving to the left, as the drawing indicates. The top edge of the wall fiest appears at window coner A and eventuaily disappears at window comerB. How much time passes between appearance and disappearance of the upper edge of the wal? Reflect in ePortfolio Open with docReader
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