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# Which statements about acceleration are true? check all that apply. a. the si units of acceleration are m/s2. b. for acceleration, you must have a number, a unit, and a direction. c. to calculate acceleration, divide the change in speed by the change in time. d. the symbol for acceleration is .

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The first thing you should know is that the acceleration is a vector, therefore, has magnitude and direction. By definition, we have that the vector acceleration is given by: Where, dv/dt: derivative of the velocity vector with respect to time, Therefore, the units of the acceleration vector are: The symbol of the acceleration is: Answer: The statements about acceleration that are met are: a. the units of acceleration are m/s2. b. for acceleration, you must have a number, a unit and a direction. d. the symbol for acceleration is (True, only if the symbol is the same as the previous)