Question: U(t ) = (t + 1)i+ (3t)j Given: Position at t = 1 is (4, 9) Is the object moving up or down at t

U(t ) = (t + 1)i+ (3t)j Given: Position at t

= 1 is (4, 9) Is the object moving up or down

U(t ) = (t + 1)i+ (3t)j Given: Position at t = 1 is (4, 9) Is the object moving up or down at t = 3

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