A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a=a1+fm where a1=3. 00 meter/second2, f=12. 0kilogram⋅meter/second2 and m=7. 00kilogram. First, which of the following is the correct step for obtaining a common denominator for the two fractions in the expression in solving for a?.

Which of the following best describes the difference between “autobiography” and “memoir”? a. autobiography is written about the author's own interpretation of events; memoir is a written interpretation of events. b. memoir covers a particular time in the writer’s life or recounts life events around one or two themes; autobiography covers the entire story of the author's life and has multiple themes. c. autobiography covers the entire story of the writer's life and has multiple themes; memoir is a shorter written work with one theme. d. autobiography covers entire story of the writer's life and has multiple themes; memoir is the writer’s random memories about past experiences.