A particle moving along the x-axis has its position described by the function x = (3t³+2t+1) m, where t is in s. You may want to review (Pages 55-56). For help with math skills, you may want to review: Differentiation of Polynomial Functions At t = 4 s, what is the particle's position? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) X = 2.09 Submit Part B V = Previous Answers X Incorrect; Try Again; 4 attempts remaining Review your calculations and make sure you round to 3 significant figures in the last step. Submit At t = 4 s, what is the particle's velocity? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) Part C μA Value m HA ax = Value ? Units At t = 4 s, what is the particle's acceleration? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) Units ? Review ?

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Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.