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Q13. According to the manufacturer, a Porsche Spyder reaches 0-100 kmph in 3 seconds. A
person starts this car from rest and after reaching the speed of 100 kmph, maintains this
speed for a further 60 seconds. He then decelerates at a rate, given by a=-2t so that the car
comes to a stop. Determine the following:
a. Total time of travel, starting from and ending at rest
b. Total distance traveled
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- Starting from rest, a car experiences an acceleration, a, causing it to start moving. It reaches itsfinal velocity, v, after accelerating for a time At.A second car that also starts from rest experiences the same acceleration for twice as much timeas the first. What is the second car's final velocity? a) vb) 1/2vc) 2vd) 1/4ve) 4v What is 90 km/hr expressed in m/s?a 25 m/sb) 324 m/sc) 1.5 m/sd) 15 m/sLucas is driving west with belongings on car. After driving west for an hour and a half he stops for gas 110 km from his parents house.As he gets back in car he notices one of the boxes fell off. He gets back in car and heads east for 30 minutes traveling 50 km before he sees box.Determine Luca average speed and velocity for each part of the trip.a. The first hour and a half B. The next 20 minutes. Did he travel faster or slower compared to the 1st hour and half? C. The whole trip5. Draw a distance vs. time graph for Melinda’s journey. Her home is located at 0 meters.Melinda is riding her bike over to her friend Sara’s house to complete an assignment. Her friend lives 5 km away. She accelerates away from her home for250 m in the next 2.5 minutes. She then rides at a constant speed of 300 m/min for 15 minutes. Melinda sees Sara’s house approaching so she slows downuntil she reaches her destination in the next 2.5 minutes. She stays at Sara’s house for 30 minutes while they work on the assignment. It is time to go home,Melinda rides home at a steady speed of 250 m/min for 10 minutes. Melinda is getting tired so she slows down for 250 m during the next 5 minutes thenstops for 2.5 minutes to have a drink. Realizing it’s getting late, she had to speed up 1 km in the next 5 minutes then rides at a constant speed of 300 m/minfor 2.5 minutes. Almost home, she decelerates for the next 10 minutes until she reaches her house.
- Physics questionHelp me please6. A train is moving with a constant speed. The train moves 60 meters for every 1.5 seconds that elapses. a. Assume that we get 40 by dividing 60 by 1.5. What is the name that is commonly given to a quantity represented by this number 40? b. To denote the quantity completely, what additional information must be given besides the number 40? c. How would you interpret the number 40 in this instance? Your answer should mention distance and time. d. Use your interpretation (not algebra) to find the distance the train moves in 2.5 seconds.
- I left my house at 7 AM, drove 1100 km and arrived in South Carolina at 6 PM. My speed at 3 PM was: A. unknown, there's not enough info B. 105 km/h, that's the speed limit C. 77 km/h D. 100 km/h3. Jakub is driving at 25.0 m/s when he sees the speed limit so he slows down (decelerates) at -4.0 m/s2 for 4.0 seconds. a. Calculate Jakub's final speed. Ax D V = V=Q11. Polar bears are strong swimmers and can swim as long as 10 hours without rest. If a polar bear swims with an average speed of 2.6 m/s, what is the total distance it can swim in 10.0 hours? Give your answer in km.
- A safety measure when driving cars is to leave a separation of "3 s" with respect to the next car. This rule has made it possible to avoid many accidents. a. If a car travels at 60 km / h, what distance (in meters) will it travel in 3 seconds? Assuming there is an accident 20 m from where you are, what acceleration must you have to bring the car to a complete stop before reaching the accident?b. Repeat part a considering a speed of 90 km / hc. Repeat part a considering a speed of 120 km / hd. Repeat part a considering a speed of 150 km / hOne of the most difficult things to learn in physics is that our everyday language is not always precise enough. For instance, we might say a car is “slowing down”, but that only gives us information abouts velocity, not its acceleration. What can we say about the velocity of a car which has negative acceleration in the x-direction? a. It is slowing down. b. The x-component of its velocity is decreasing. c. The x-component of its velocity is negative. d. It is speeding up. e. The x-component of its velocity is positive. f. The x-component of its velocity is increasing.2. Frankie and Rosie take a trip in a car from one town to the next. During the trip several different average speeds are driven based on traffic. Frankie drives for 16.4 miles at 22.0 m/s, 14.5 miles at 26.0 m/s, and 30.2 miles at 18.0 m/s. As part of this trip Frankie and Rosie stop to eat dinner at a diner for about 35.0 minutes. Calculate the total time for the entire trip in minutes. o straight portion of a track