The Equation for the Change of Position of a Train $x = \frac { 1 } { 2 } a t ^ { 2 } + b t ^ { 3 }$

question 46

Multiple Choice

The equation for the change of position of a train starting at x = 0 m is given by $x = \frac { 1 } { 2 } a t ^ { 2 } + b t ^ { 3 }$ .The dimensions of b are

• A)T ^{- 3}
• B)LT ^{- 3}
• C)LT ^{- 2}
• D)LT ^{- 1}
• E)L ^{- 1}T ^{- 1}

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