A 57.0-kg boy and his 38.0-kg sister, both wearing roller blades, face each other at rest....
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A 57.0-kg boy and his 38.0-kg sister, both wearing roller blades, face each other at rest. The girl pushes the boy hard, sending him backward with a velocity 2.60 m/s toward the west. Ignore friction. (a) Describe the subsequent motion of the girl. She will move east, directly away from her brother with a speed 5.2 m/s. She will move east, directly away from her brother with a speed 3.90 m/s. She will move west, in the same direction as her brother, with a speed 2.60 m/s. She will move east, directly away from her brother with a speed 1.3 m/s. (b) How much potential energy in the girl's body is converted into mechanical energy of the boy-girl system? (c) Is the momentum of the boy-girl system conserved in the pushing-apart process? Yes No (d) If so, explain how that is possible considering there are large forces acting. (If momentum is not conserved, enter "Momentum is not conserved.") This answer has not been graded yet. (e) If so, explain how that is possible considering there is no motion beforehand and plenty of motion afterward. (If momentum is not conserved, enter "Momentum is not conserved.") O O O A 57.0-kg boy and his 38.0-kg sister, both wearing roller blades, face each other at rest. The girl pushes the boy hard, sending him backward with a velocity 2.60 m/s toward the west. Ignore friction. (a) Describe the subsequent motion of the girl. She will move east, directly away from her brother with a speed 5.2 m/s. She will move east, directly away from her brother with a speed 3.90 m/s. She will move west, in the same direction as her brother, with a speed 2.60 m/s. She will move east, directly away from her brother with a speed 1.3 m/s. (b) How much potential energy in the girl's body is converted into mechanical energy of the boy-girl system? (c) Is the momentum of the boy-girl system conserved in the pushing-apart process? Yes No (d) If so, explain how that is possible considering there are large forces acting. (If momentum is not conserved, enter "Momentum is not conserved.") This answer has not been graded yet. (e) If so, explain how that is possible considering there is no motion beforehand and plenty of motion afterward. (If momentum is not conserved, enter "Momentum is not conserved.") O O O
Expert Answer:
Answer rating: 100% (QA)
Given that The mass of the boy m b 57 kg The mass of the girl is m g 38 kg Final velocity of the b... View the full answer
Related Book For
Posted Date:
Students also viewed these physics questions
-
A proton and an anti proton annihilate each other at rest and produce two pions, and +. What is the kinetic energy of each pion?
-
If an airplane is flying in the same direction as the wind, will the velocity of the plane relative to the ground be greater than, less than, or equal to the velocity of the plane relative to the...
-
Find a unit vector in the same direction as v = (1.2, -3)T for (a) The Euclidean norm (b) The weighted norm ||v||2 = 2v1/2 + v22 + 1/3 u23 (c) The I norm (d) The norm (e) The norm based on the inner...
-
How would you compare the value of direct definition from friends in face-to-face conversation and strangers comments on a YouTube posting?
-
The BMAC Company purchased land many years ago for $100,000 as a potential site for a new building. No building was ever constructed. A comparable lot near the site was recently sold for $350,000....
-
Congressman Pinkie proposes reducing the tax exemption for children in married families where only one parent works outside the home. Why would this proposal improve equity, from a Haig-Simons...
-
What types of regulatory compliance are organizations responsible for?
-
Norrington Trading Co. provides the following income statement for 2011: Sales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
-
The company leased a warehouse on January 1, 2019 with the following information: Annual fixed payment paid at the end of the year Cost of restoring the asset required by the contract Payment to...
-
The time between arrivals of cars at the Petroco Service Station is defined by the following probability distribution: Time Between Arrivals (min.) ......... Probability 1 ............... .15 2...
-
Explain how factors like age, life stage, and economic factors might affect consumer responses to Glossier's digital marketing campaign. Compare CoverGirl's "I Am What I Make Up" ad campaign to...
-
4. Let the table with the following training data be given. Num. X1 X2 Class 1 6 1 0 2 7 3 0 3 8 2 0 4 st 9 0 0 5 8 4 1 6 8 6 1 7 9 2 1 8 9 5 1 In the following, use the Manhattan distance d(a, b),...
-
Morgan is the founder of a new start-up company. She hires mostly young employees who are recent college graduates. She finds that most of her employees want to further their knowledge and skills and...
-
Indicate how the following item is reported in the financial statements of a company: The balance of $500,000 in a billings account, which is less than $600,000 in a construction in process account....
-
Can you rephrase this: Illegal price transfer and allocation of income refer to practices employed by multinational corporations (MNCs) to manipulate their financial transactions and shift profits to...
-
A company that produces and sells ceramic tiles for $ 4 1 . 7 8 per square foot has fixed weekly expenses of $ 7 , 2 1 0 and variable expenses of $ 1 4 . 7 9 for each square foot of tile. Determine...
-
A state legislature passes a policy to reduce unintended pregnancies by making contraceptives available in high schools. You are hired to evaluate the policy. List two process measures and two...
-
Using the information presented in Problem 13.4B, prepare a partial statement of cash flows for the current year, showing the computation of net cash flows from operating activities using the...
-
The critical angle for a certain type of glass in air is 41.8o. What is the index of refraction of the glass?
-
A freight car with a mass of 25 000 kg rolls down an inclined track through a vertical distance of 1.5 m. At the bottom of the incline, on a level track, the car collides and couples with an...
-
Are the joule heating rates for resistors in series generally the same? If not, under what circumstance(s) could they be the same?
-
Prove the following boundary conditions using an arbitrage argument. In your proof, show the initial positive cash flow when the condition is violated and prove there are no liabilities at expiration...
-
Option price relations can be seen by looking at real-time pricing, market data, and data for exchange-traded call and put options found on OMON, CALL, and PUT. Using the OMON screen for selected a...
-
Prove mathematically the following condition for the early exercise of a call by a call holder: \(D>T V P\).
Study smarter with the SolutionInn App