Why do you use the minimum time to calculate the maximum value speed?

Page > of 4 22. The accompanying graph shows Marie's distance from home (A) to work (F) at various times during her drive. Marie's Trip to Work 20 15 10 DE 10 15 20 25 30 35 40 Time (min) Marie left her briefcase at home and had to return to get it. State which point represents when she turned back around to go home and explain how you arrived at that conclusion. a b. Marie also had to wait at the railroad tracks for a train to pass. How long did she wait? MacBook Air 50 F3 I F8 > F9 5 FIO 44 F7 F5 %23 %24 & 3 4. 5 8 R Y D F H. K 60 (ju) ewoH woJj eouejsic

A circular racetrack has a distance of 755 m. A racer is currently driving her car on the racetrack. As she starts the car from rest, it begins to accelerate to a speed of 120 kph in 9 s. a. Determine the magnitude of the total acceleration of the car, 4 s after the car begins to increase its speed. b. If she maintains the speed of the car to be 120 kph, determine the magnitude of the total acceleration of the car after 5s. c. Upon accelerating to 120 kph, will the car pass its starting point? Prove using kinematic equations.

Please Aspa

You and your family are going on a road trip to visit your recently married cousin in B.C. The total round trip distance is 2100 km. On the way to B.C., you encounter no setbacks and you are able to drive on average at a constant speed. On the way home from B.C., you encounter a snowstorm and your mom has to slow down to avoid getting into an accident. Thus, your average speed decreases by 10 km/h. If the total driving time was 42 hours, what was your average speed on the way to B.C.? Recall distance = speed x time.

You and Sally are walking to a local restaurant for dinner and disagree about which path would be faster. You each decide to travel on your chosen paths. On your path, the distance to the restaurant is 1.7 miles and you walk at a rate of 4.0 mph. Sally walks at a rate of 4.2 mph and her path is longer at 1.9 miles. Who gets to get the restaurant first? How much earlier does the winner get to the restaurant, in hours or minutes?

Fast Car: On a hot day in the flats, the temperature is 106.2 degrees. A driver finds an empty, flat stretch of desert that is 1913 meters long and decides to push the limits of his car. He finds the car can accelerate from 0 to 60 mph (26.8 m / s) in 4.95 s. Now he wants to see how fast the car can go. Assume the car maintains the same average acceleration until it reaches its top speed of 87.9 m / s. (a) How long will it take the car to reach its top speed? (b) How far will the car travel before it reaches its top speed?

QUESTION 2 You start out by driving 173 miles south in 2 hours and 33 minutes, and then you stop and park for a while. Finally you drive another 56 miles south in 3 hours and 39 minutes. The average velocity for your entire trip was 29.55 miles per hour to the south. How much time did you spend parked?   A 7 hours 44 minutes   B 1 hours 32 minutes   C 3 hours 5 minutes   D 0 hours 46 minutes

You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the Empire State Building. Before the state legislature votes on funding for the project, they would like you to prepare a report on the benefits of upgrading the elevators. One of the numbers that they have requested is the time it will take the elevator to go from the ground floor to the 102nd floor observatory. They are unlikely to approve the project unless the new elevators make the trip much faster than the old elevators. If state law mandates that elevators cannot accelerate more than 1.80 m/s2 or travel faster than 14.8 m/s, what is the minimum time in which an elevator can travel the 373 m from the ground floor to the observatory floor? minimum travel time: