Use the velocity vs time plot from the previous two questions (reproduced here). Choose the phrase that accurately describes the person's motion from 5s to 7s. (a) Moving forward while slowing down.
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Use the velocity vs time plot from the previous two questions (reproduced here). Choose the phrase that accurately describes the person's motion from 5s to 7s.
(a) Moving forward while slowing down.
(b) Moving forward at a constant speed.
(c) Moving backward while speeding up.
(d) Moving backward while slowing down.
(e) Moving backward at a constant speed.
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- Subject Physics Question: which of these situations describes the motion shown in the motion diagram at point A? Figure at 1. A car is moving along a straight road at a constant speed. 2. A car is moving along a straight road while slowing down. 3. A car is moving along a straight road while speeding up. 4. A hockey puck slides along a smooth frictionless icy surface. 5. A hockey puck slides along a rough concrete surface. 6. A rock is thrown horizontally air resistance is negligible. 7. A rock is thrown horizontally air resistance is substantial. 8. A rock is dropped vertically air resistance is neglible . 9. A rock is dropped vertically air resistance is substantial. * Hint: select all that apply using the figure attached below ⬇️ *Part A: Knowledge and Understanding Questions Answer the following multiple choice questions by choosing the most appropriate answer. Place your answer in the answer key on the first page of your test booklet. 1. Which one of the following is NOT consistent with a car which is accelerating? a. moving with an increasing speed. b. moving with a decreasing speed. d. changing direction. c. moving with a high speed. 2. Anna Mungal is running down the football field in a straight line. She starts at the O-yard line at 0 seconds. At 1 second, she is on the 10-yard line; at 2 seconds, she is on the 20-yard line; at 3 seconds, she is on the 30-yard line; and at 4 seconds, she is on the 40-yard line. This is evidence that, a. she is accelerating b. she is covering a greater distance in each consecutive second. c. she is moving with a constant speed (on average). d. none of the answers are correct 3. Which one of the following quantities is NOT a vector? a. 10 mi/hr, east b. 10 mi/hr/sec, west c.…A basketball rolls away from you with a constant speed until hit hits a large bump at the end of your driveway. The ball rolls up the bump only under the influence of gravity, then stops for a split second, then rolls down the other side of the bump. [motion away from you is positive motion). Which veloctiy vs. time graph best shows the motion of the ball as it rolls? a. V O b. v O c. v O d. v e. v
- Please answer 1-5 with a full sentence. Please make sure the answers are clear.Please answer both. ThankFreight trains can produce only relatively small accelerations and decelerations. a) What is the final velocity of a freight train that accelerates at a rate of 0.0495 m/s² for 5 min, starting with an initial velocity of 4.55 m/s? b) If the train can slow down at a rate of 0.051 m/s², how long will it take to come to a stop from this velocity? 9. Click on units for help with units. *************
- Use the VELOCITY vs. TIME graph below to answer the following questions. Let west be the positive direction & east be the negative direction. Express all answers in the appropriate mks units. [NOTE: m/s² should be entered as m/s^2.] VELOCITY vs. TIME GRAPH X-velocity (m/s) A.) Over what period of time was the object speeding up? 15 s to 25 s B.) Over what period of time was the object slowing down? 100 Os to 10 s C.) Over what period of time was the object's velocity constant? 50 10 s to 15 s D.) State the magnitude & direction of the object's acceleration at 3 s. west - 50 E.) State the magnitude & direction of the object's acceleration at 13 s. south - 100 F.) State the magnitude & direction of the object's acceleration at 16.5 s. t (s) 25 10 15 20 northPractice: Acceleration Graphs Part 1: Match the letters on the graph to the statements in #1-3 that best describe Clara's motion Then answer questions 4 and 5. _? _1. Clara has a positive acceleration for 5 minutes. Graph of Clara's Motion ? 2 Clara has zero acceleration. 1400 1200 1000 ? _3. Clara is speeding up for 10 minutes. 600 A. 4. Calculate Clara's acceleration for part A of her run. 400 . 200 Add Text Here! 10 15 20 25 Time (min) 5. Calculate Clara's acceleration for part C of her run. Add Text Here! Part 2 Use the graph below to anwer questions 6-10 about Jay's motion on his walk. . 6. Describe the motion of Jay's walk during part A V part C. Add Text Here! Jay's Walk B 7. What is happening at part B? Add Text Here! D A 8. What happens to Jay's motion at 30 minutes into his walk? Time min Add Text Here! 9. At what speed is Jay traveling at 5 minutes into his walk? At what time in his walk does he have the greatest speed? Add Text Here! 10. Make up a short story to explain how…