The Velocity V(t)(t)= X'(t)at Time T of an Object Moving $x ^ { t } ( t ) = - 3 ( 3 t + 1 ) ^ { 1 / 2 }$

question 13

Multiple Choice

The velocity v(t) (t) = x'(t) at time t of an object moving along the x axis is given,along with the initial position x(0) of the object. $x ^ { t } ( t ) = - 3 ( 3 t + 1 ) ^ { 1 / 2 }$ ; x(0) = 4 Find:
(a) The position x(t) at time t.
(b) The position of the object at time t = 1.
(c) The time when the object is at x = 2.
Round answers for parts (b) and (c) to one decimal place.

• A)(a) \(x ( t ) = - \frac { 2 } { 3 } ( 3 t + 1 ) ^ { 3 / 2 }\) (b)x(1)= -5.3(c)t = -0.3
• B)(a) \(x ( t ) = - \frac { 2 } { 3 } ( 3 t + 1 ) ^ { 3 / 2 } + \frac { 14 } { 3 }\) (b)x(1)= 0.7(c)t = -7.7
• C)(a) \(x ( t ) = - \frac { 2 } { 3 } ( 3 t + 1 ) ^ { 3 / 2 }\) (b)x(1)= 0.1(c)t = -12.3
• D)(a) \(x ( t ) = - \frac { 2 } { 3 } ( 3 t + 1 ) ^ { 3 / 2 } + \frac { 14 } { 3 }\) (b)x(1)= -0.7(c)t = 0.5

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