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?
-
List the advantages and disadvantages of random sampling.
-
Chlorophyll contains 2.72% Mg by mass. Assuming one Mg atom per chlorophyll molecule, what is the molecular mass of chlorophyll?
-
The management control systems framework has been criticized on the grounds that all managerial activity (e.g., planning, decision making, intelligence gathering) is seen as control activity. To what...
-
Grand Champion, Inc., purchased Americas Sweethearts Corporation on January 1, Year 1. At the time, Americas Sweethearts had $750,000 of identifiable assets and $525,000 of liabilities. Grand...
-
Identifying the Center and Radius Given an Equation in General Form Identify the center and radius of a circle whose equation is x + y+10x-14y+ 58 = 0. Complete the square for the x- and y-terms....
-
Redang Chalet Sdn Bhd (RCSB) rents out chalet to tourists at a popular beach in Redang, Terengganu. RCSB own 10 chalets, in which the construction cost amounted to RM1 million. Each chalet is...
-
Identify the x- and y-intercepts of a line create Example #8: 4x-2y=16 equation for x ty 4x=16-2y=16 Example #9: 17 3x 2y = -18 3x=-18-2y=-18 Example #10: 5x + 4y = 40 5x=40 ky x-intercept:...
-
(1). Please convert the following MIPS code shown below into C code. add $to, $0, $0 add St2, SO, SO addi Ss0, $0, 3 labell: slt St1, St0,Ss0 beq St1, SO, label2 addi St2, St2, 2 addi St0, St0, 1 j...
-
Morpeth Ltd. began 2020 with retained earnings of $12 million. Revenues during the year were $37 million and expenses totalled $26 million. Morpeth declared dividends of $8 million. What was the...
-
A diving board is held by two pillars (see image below). The board is 2.4 m long and has a total mass of 8 kg. The pillars are separated by a distance d = 0.9 m. What is the force on the second...
-
How to create a relational model from DDL statements and how you save a relational model design.?
-
Do size and value effects mean that small stocks outperform large stocks or value stocks outperform growth stocks in every year/every month? Explain.
-
Dividends Per Share Seventy-Two Inc., a developer of radiology equipment, has stock outstanding as follows: 80,000 shares of cumulative preferred 3% stock, $20 par and 410,000 shares of $25 par...
-
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?
-
Your company is evaluating a new project, and you've estimated that the cost of capital for the project will be 8 percent. Assume that you have also projected the following cash flows for the...
-
Cedeno Company has decided to introduce a new product. The new product can be manufactured by either a capital-intensive method or a labor-intensive method. The manufacturing method will not affect...
-
Your company is evaluating a new project, and you've estimated that the cost of capital for the project will be 8 percent. Assume that you have also projected the following cash flows for the...
Study smarter with the SolutionInn App