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- You are driving through town at 10.0 m/sm/s when suddenly a ball rolls out in front of you. You apply the brakes and begin decelerating at 3.2 m/s2m/s2.A) How far do you travel before stopping? (Already Answered it's 16m)B)A runner is moving with a speed of 2.68[m/s]. How long will it take the runner to complete a 5.0[km] race? Express your answer in seconds. Ignore the time it takes to reach this speed, and assume the runner is always at this speed.Maria throws two stones from the top edge of a building with a speed of 2.9 x 10' m/s. The height of the building is 7 x 102 meters. She throws one straight down and the other straight up. The first one hits the street in a time tj. How much later is it before the second stone hits? answer in seconds.
- You are driving along Lawrence Ave. at 60 km/h. You see the traffic light ahead is still green and decide to speed up to try to make it through the intersection before it turns red (poor decision!). Your car accelerates at 1.3 m/s. You reach the light after accelerating for 4.3 seconds. What is your speed at the light in m/s? V =v, +aAt A: Pictorial Representation Sketch showing events, describe events, coordinate system, label givens & unknowns with symbols, conversions B: Physics Representation Motion diagram, motion graphs, velocity vectors, events a C: Word Representation Describe motion (no numbers),-assumptions, estimated result (no calculation) D: Mathematical Representation Describe physics of steps, complete equations, algebraically isolate, substitutions with units, final statement of prediction E: Evaluation Answer has reasonable size, direction and units? Why?Sarah is driving on a freeway in a forest at 13.0m/s when suddenly a deer runs in front of her and stands still out of fright. The deer is 20.0m in front of Sarah when she steps on the brakes with a deceleration of magnitude 4.59 m/s2A) Find the stopping distance of Sarah. Does she hit the deer? Give support to your explanation.B) How long (how much time) does it take Sarah to travel half of the stopping distance in part (a)?One of my questions got solved and helped me so much thank you! Here’s another one please. Two trains are 9.82km apart. They travel in opposite directions, to each other. Train A has a speed of 5.87 km/h at departure and an acceleration of 0.29m/s squared. Train B has a speed of 20.3m/s at the start and an acceleration of 0.69m/s squared. B. Determine when the trains meet.
- You are driving along Lawrence Ave. to speed up to try to make it through the intersection before it turns red (poor decision!). Your car accelerates at 1.3 m/s?. You reach the light after accelerating for 4.3 seconds. What is your speed at the light in m/s? 60 km/h. You see the traffic light ahead is still green and decide V, =v, +aAt A: Pictorial Representation Sketch showing events, describe events, coordinate system, label givens & unknowns with symbols, conversions B: Physics Representation Motion diagram, motion graphs, velocity vectors, events a +x t t C: Word Representation Describe motion (no numbers),-assumptions, estimated result (no calculation) D: Mathematical Representation Describe physics of steps, complete equations, algebraically isolate, substitutions with units, final statement of prediction E: Evaluation Answer has reasonable size, direction and units? Why?A tortoise and a hare are competing in a 1200-meter race. The arrogant hare decides to let the tortoise have a 820-meter head start. When the start gun is fired the hare begins running at a constant speed of 8 meters per second and the tortoise begins crawling at a constant speed of 4.5 meters per second. Which of the following formulas expresses the distance between the tortoise and the hare in meters, d, in terms of the number of seconds, t, since the start gun was fired? Od = 820 - 8t Od = 820 + 3.5t Od = 820 - 3.5t Od = 1200 3.5t Od = 1200 - (8t + 4.5t)Maria throws two stones from the top edge of a building with a speed of 1.2 × 10' m/s. The height of the building is 9.6 x 10- meters. She throws one straight down and the other straight up. The first one hits the street in a time t1. How much later is it before the second stone hits? answer in seconds.