Una piedra de masa m = 1,0 kg se deja caer desde una altura de h = 30 m. Desprecie la resistencia del aire. Determine: a) La rapidez de la piedra cuando se encuentra a 20 m sobre el suelo. b) La rapidez justo antes de impactar el suelo.  

A 55-year-old man recently started oral ferrous sulfate for iron deficiency anemia. At his follow-up visit, he reports constipation and dark-colored stools. He asks if he should discontinue the medication.What is the best response?

A family nurse practitioner evaluates a 64-year-old patient with progressive fatigue, unexplained weight loss, intermittent fever, elevated CRP, and generalized weakness. After completing the history, physical examination, and initial laboratory evaluation, the diagnosis remains uncertain.Which approach best demonstrates advanced clinical reasoning in primary care?

A 69-year-old woman reports progressive fatigue and worsening shortness of breath over the past year. She also notices occasional palpitations. Cardiac examination reveals a high-pitched holosystolic murmur heard best at the cardiac apex with radiation toward the left axilla.Which diagnosis is most likely?

A 58-year-old woman presents with a 1-year history of urinary urgency accompanied by involuntary urine leakage before she is able to reach the bathroom. She reports urinary frequency every 2 hours during the day and awakens three to four times each night to void. She occasionally loses urine when she hears running water or inserts the key into her front door after returning home. She denies dysuria, fever, hematuria, or recurrent urinary tract infections. Physical examination is unremarkable. Urinalysis is normal, and her post-void residual volume is 30 mL.Which of the following is the most likely diagnosis?

A 66-year-old man presents with worsening fatigue, frequent respiratory infections, easy bruising, and an unintentional 15-pound weight loss over two months.CBC:WBC: 18,900/mm³Hemoglobin: 8.8 g/dLPlatelets: 72,000/mm³Peripheral smear demonstrates circulating blast cells.What is the most appropriate action by the primary care provider?

A 78-year-old woman presents with progressive memory loss over the past two years. During today’s visit, she is unable to correctly place the numbers on a clock face and recalls only one of three words after several minutes.Which screening tool is being utilized?

A 57-year-old patient presents with a new headache that has become progressively worse over the past month. Examination reveals papilledema.What is the most appropriate next step?

A 64-year-old man presents with fatigue, easy bruising, recurrent sinus infections, and a 12-pound weight loss over two months.CBC reveals:WBC 48,000/mm³Hemoglobin 8.7 g/dLPlatelets 42,000/mm³Peripheral smear demonstrates circulating blasts.Which is the most appropriate next step?

A 46-year-old woman with newly diagnosed iron deficiency anemia begins oral iron therapy. Four weeks later, her hemoglobin has increased from 9.0 g/dL to 10.1 g/dL, and she reports improved energy.Which recommendation regarding iron therapy is most appropriate?