Let $\mathbf { a } ( t ) = - 9.5 \mathbf { k }$

Multiple Choice

Let $\mathbf { a } ( t ) = - 9.5 \mathbf { k }$ be the acceleration of an object with velocity $\mathbf { v } ( t )$ . If $\mathbf { v } ( 0 ) = \mathbf { i } + 2 \mathbf { k }$ then $\mathbf { v } ( t )$ is

A) $- \mathbf { i } + 2 \mathbf { j } + 9.5 t \mathbf { k }$
B) $\mathbf { i } + 2 \mathbf { j } + 9.5 t \mathbf { k }$
C) $\mathbf { i } + 2 \mathbf { j } - 9.5 t \mathbf { k }$
D) $\mathbf { i } - 2 \mathbf { j } - 9.5 t \mathbf { k }$
E) $- \mathbf { i } + 2 \mathbf { j } - 9.5 t \mathbf { k }$