WebAssign isallowing only one guess. Great. Any help would beappreciated. An obj
ID: 1663206 • Letter: W
Question
WebAssign isallowing only one guess. Great. Any help would beappreciated.An object is thrown with a fixed initialspeed v0 at variousangles relative to the horizon. At someconstant height h above the launch point thespeed v of the object is measured as a functionof the initial angle . Which of the following bestdescribes the dependence of v on? (Assume that the height h isachieved, and assume that there is no air resistance.) v willincrease monotonically with .v willincrease to some criticalvalue vmax and thendecrease. v willremain constant, independent of.v willdecrease to some criticalvalue vmin and thenincrease.Noneof the above. WebAssign isallowing only one guess. Great. Any help would beappreciated.
An object is thrown with a fixed initialspeed v0 at variousangles relative to the horizon. At someconstant height h above the launch point thespeed v of the object is measured as a functionof the initial angle . Which of the following bestdescribes the dependence of v on? (Assume that the height h isachieved, and assume that there is no air resistance.) v willincrease monotonically with .v willincrease to some criticalvalue vmax and thendecrease. v willremain constant, independent of.v willdecrease to some criticalvalue vmin and thenincrease.Noneof the above. v willincrease monotonically with .v willincrease to some criticalvalue vmax and thendecrease. v willremain constant, independent of.v willdecrease to some criticalvalue vmin and thenincrease.Noneof the above. v willincrease monotonically with .v willincrease to some criticalvalue vmax and thendecrease. v willremain constant, independent of.v willdecrease to some criticalvalue vmin and thenincrease.Noneof the above.
Explanation / Answer
I'm not entirely sure which of the answers is correct, but I candescribe what will happen. You can assume that at any angle being considered, the object willreach this height h. At time 0, the object will always be atrest. When the object is first thrust forward, the objectwill accelerate to a max, then decrease as it nears the maximumheight it will reach, it was pause for an infinitesimally smalltime, then it will start it's descent and it's speed will increaseagain until it either attains it's terminal velocity or it hits theground, whichever comes first. SO, with that said, you can rule out v remaining constant. V willincrease to a critical value vmax, and it will then decrease to 0,and increase again but in a different (downward) direction. So it sort of acts like two of the options, but inconjunction. I don't think it's looking for either one ofthem as the correct answer. I'm not quite sure how tointerpret the first option, as the Merriam Webster dictionarystates that monotonic means "having the property either of neverincreasing or of never decreasing as the values of the independentvariable or the subscripts of the terms increase", and this doesn'tseem to make sense as right before that, the option states that itis increasing monotonically. So, I would say that your answeris none of the above. But I wouldn't bet my life's savings onit.
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