12.13. A toy car travels clockwise in a semi-circular path of radius r = 3.0m at...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
12.13. A toy car travels clockwise in a semi-circular path of radius r = 3.0m at a constant speed of |||| 4.8 m/s. -3 = A t = Os 82 B a. Since the car always moves with constant speed, then what is the car's instantaneous speed at any particular time, for instance at 1s? b. Find the instantaneous velocity vector at points A, B, C. Write your answer in terms of . ANS: At C: -4.7 - 0.67 13.12. a. What is the equation that relates the instantaneous velocity at time t = t to the average velocity from t = t to t = t2. Explain what the symbol means in your answere. b. In the lecture notes you see the following picture. What is this picture trying to show us? Give your answer as a short sentence. y t1 A Vavg Vavg D t t Vavg 47 B t = t C t > t x 8 31 Dashboard Calendar To Do Notifications Inbox 2:29 AM Tue Mar 12 Back 2ag HCHW Ch 3 (18).pdf C. What are the 3 steps to drawing an instantaneous velocity vector at a point on the path? d. What is the rule for drawing the average velocity from the times t = t to t = t? HELP: See page 14 of notes. 14.12.The path of a moving object is given by the two equations x = t 1 2 - y: = -t + 10t 18 = = 3s and t = 5s. Give your answer as components where x, y are in meters and t is in seconds. a. Compute the postion vector at t x, y b. Find the average velocity from t = 3s to t Vavg,x, Vavg,y = 5s. Give your answer as components Find the instantaneous velocity at t = 3s by computing the average velocity from = 3s and t = 3s+ 0.1s as an approximation. Give your answer as components C. t Vx, Vy d. Use what you said in problem = #13 to draw the four vectors below on the graph 3s i. position vector at t ii. position vector at t = 5s iii. average velocity from t iv. instantaneous velocity at t = 3s to t = 5s = 3s y [m] 5 O 5 10 x [m] 100% 15.C. IDEA: horizontal and vertical vectors are different and simpler than most general vectors that look diagonal. A. The velocity vector seen below has |||| = 10 m/s Is it vertical or hoirizontal? Find its components Vx and Vy True or false: We can write symbolically v = ||||| 9 31 Dashboard Calendar 000 To Do Notifications Inbox 2:29 AM Tue Mar 12 Back 100% 2ag HCHW Ch 3 (18).pdf B. The acceleration vector seen below has ||a|| = 4 m/s True or false: We can write symbolically ax = -||a|| C. Suppose A reprsents any horizontal vector. A can be position, displacement, velocity or acceleration. Is it vertical or hoirizontal? Find its components ax and ay True or fasle: Ay = 0 Explain with a short sentence under what circumstances Ax D. The velocity vector seen below has |||| = 5 m/s = ||A|| versus Ax = |||| Is it vertical or hoirizontal? Find its components vx and Vy True or false: We can write symbolically v = |||| E. The acceleration vector seen below has ||a|| = 3 m/s Is it vertical or hoirizontal? Find its components ax and ay True or false: We can write symbolically ay F. Suppose reprsents any vertical vecto. acceleration. True or fasle: Ax = 0 = -||a|| A can be position, displacement, velocity or G. Explain with a short sentence under what circumstances A = |||| versus A = ||||. H. Seen below is a generic vector A. Can we say it is a horizontal or vertical vectoir? Yes. or no? Find ||A|| Explain using a short sentence why we can NOT say that Ax ||A|| and A = ||A||. In other = words, write a symbolic formula that correctly relates the three quantities Ax, Ay, and ||A|| HELP: Pythagorean Theorem. 6 10 = 12.13. A toy car travels clockwise in a semi-circular path of radius r = 3.0m at a constant speed of |||| 4.8 m/s. -3 = A t = Os 82 B a. Since the car always moves with constant speed, then what is the car's instantaneous speed at any particular time, for instance at 1s? b. Find the instantaneous velocity vector at points A, B, C. Write your answer in terms of . ANS: At C: -4.7 - 0.67 13.12. a. What is the equation that relates the instantaneous velocity at time t = t to the average velocity from t = t to t = t2. Explain what the symbol means in your answere. b. In the lecture notes you see the following picture. What is this picture trying to show us? Give your answer as a short sentence. y t1 A Vavg Vavg D t t Vavg 47 B t = t C t > t x 8 31 Dashboard Calendar To Do Notifications Inbox 2:29 AM Tue Mar 12 Back 2ag HCHW Ch 3 (18).pdf C. What are the 3 steps to drawing an instantaneous velocity vector at a point on the path? d. What is the rule for drawing the average velocity from the times t = t to t = t? HELP: See page 14 of notes. 14.12.The path of a moving object is given by the two equations x = t 1 2 - y: = -t + 10t 18 = = 3s and t = 5s. Give your answer as components where x, y are in meters and t is in seconds. a. Compute the postion vector at t x, y b. Find the average velocity from t = 3s to t Vavg,x, Vavg,y = 5s. Give your answer as components Find the instantaneous velocity at t = 3s by computing the average velocity from = 3s and t = 3s+ 0.1s as an approximation. Give your answer as components C. t Vx, Vy d. Use what you said in problem = #13 to draw the four vectors below on the graph 3s i. position vector at t ii. position vector at t = 5s iii. average velocity from t iv. instantaneous velocity at t = 3s to t = 5s = 3s y [m] 5 O 5 10 x [m] 100% 15.C. IDEA: horizontal and vertical vectors are different and simpler than most general vectors that look diagonal. A. The velocity vector seen below has |||| = 10 m/s Is it vertical or hoirizontal? Find its components Vx and Vy True or false: We can write symbolically v = ||||| 9 31 Dashboard Calendar 000 To Do Notifications Inbox 2:29 AM Tue Mar 12 Back 100% 2ag HCHW Ch 3 (18).pdf B. The acceleration vector seen below has ||a|| = 4 m/s True or false: We can write symbolically ax = -||a|| C. Suppose A reprsents any horizontal vector. A can be position, displacement, velocity or acceleration. Is it vertical or hoirizontal? Find its components ax and ay True or fasle: Ay = 0 Explain with a short sentence under what circumstances Ax D. The velocity vector seen below has |||| = 5 m/s = ||A|| versus Ax = |||| Is it vertical or hoirizontal? Find its components vx and Vy True or false: We can write symbolically v = |||| E. The acceleration vector seen below has ||a|| = 3 m/s Is it vertical or hoirizontal? Find its components ax and ay True or false: We can write symbolically ay F. Suppose reprsents any vertical vecto. acceleration. True or fasle: Ax = 0 = -||a|| A can be position, displacement, velocity or G. Explain with a short sentence under what circumstances A = |||| versus A = ||||. H. Seen below is a generic vector A. Can we say it is a horizontal or vertical vectoir? Yes. or no? Find ||A|| Explain using a short sentence why we can NOT say that Ax ||A|| and A = ||A||. In other = words, write a symbolic formula that correctly relates the three quantities Ax, Ay, and ||A|| HELP: Pythagorean Theorem. 6 10 =
Expert Answer:
Related Book For
Posted Date:
Students also viewed these physics questions
-
2. Design a market survey asking your friends at least three questions about their attitudes, preferences, or choices. Prepare and present your results, noting the number of respondents, and any...
-
CANMNMM January of this year. (a) Each item will be held in a record. Describe all the data structures that must refer to these records to implement the required functionality. Describe all the...
-
Let A, B be sets. Define: (a) the Cartesian product (A B) (b) the set of relations R between A and B (c) the identity relation A on the set A [3 marks] Suppose S, T are relations between A and B, and...
-
A managers key task is to balance which four customer service factors against which six logistics cost factors?
-
A new computer system will require an initial outlay of $20,000, but it will increase the firm's cash flows by $4,000 a year for each of the next 8 years. Is the system worth installing if the...
-
Explain in each of the following situations how market forces might give a business an incentive to act in a less discriminatory fashion. a. A local flower delivery business run by a bigoted white...
-
How is a right-of-use asset calculated?
-
Bob Bell's fortieth birthday party promised to be the social event of the year in Cookeville. To prepare, Bob stocked up on the following liquors: LIQUOR AMOUNT ON HAND (OUNCES) Bourbon...
-
Martin's Yachts has paid annual dividends of $1.40, $1.75, and $2.00 a share over the past three years, respectively. The company now predicts that it will maintain a constant dividend since its...
-
The following estimated regression equation is based on 10 observations was presented. Here SST 6,724.125, SSR = 6,216.375, sbi 0.0813, and 8b a. Compute MSR and MSE (to 3 decimals). MSR = MSE...
-
In each of the following, name the term defined or answer the question. Answers are listed at the bottom. 1. The model most appropriate for making a one-time purchase of an item. 2. The model most...
-
Governments across Europe have instituted austerity measures in an attempt to cut budget deficits which ballooned after the Financial Crisis. Are they right to do this if economic recovery is weak?
-
Why have the fiscal plans of the Italian coalition government caused tensions with the EU Commission?
-
Why has the migrant crisis increased pressure on EU governments and increased the tensions between members of the EU?
-
In each of the following, name the term defined or answer the question. Answers are listed at the bottom. 1. Term used to refer to the process a firm uses to balance supply and demand. 2. When doing...
-
A machine costing $ 2 1 3 , 6 0 0 with a four - year life and an estimated $ 2 0 , 0 0 0 salvage value is installed in Luther Company s factory on January 1 . The factory manager estimates the...
-
White Bolder Investments (WBI) You are an intern working for WBI, a large investment advisory services in Sydney. Among other regular customers, WBI has been providing advisory services for Jumbo...
-
Identify Z, N, and A for the following isotopes: (a) U, (b) Pu, (c) 'Nd. 144 60 Nd. 238U, (b) (a) 94
-
Find the energy released in the following fusion reaction: H + }HHe + Y
-
Here's something you can try at home-an experiment to measure your reaction time. Have a friend hold a ruler by one end, letting the other end hang down vertically. At the lower end, hold your thumb...
-
On September 1, 1998, Susan Chao bought a motorcycle for \($10,000.\) She paid \($1,000\) down and financed the balance with a five-year loan at a stated annual interest rate of 9.6 percent,...
-
You have recently won the super jackpot in the Illinois state lottery. On reading the fine print, you discover that you have the following two options: a. You receive \($160,000\) at the beginning of...
-
Peter Green bought a \($15,000\) Honda Civic with 20 percent down and financed the rest with a four-year loan at 8 percent stated annual interest rate, compounded monthly. What is his monthly payment...
Study smarter with the SolutionInn App