Let the Acceleration of a Particle Be $\mathbf { a } ( t ) = t \mathbf { i }$

Multiple Choice

Let the acceleration of a particle be $\mathbf { a } ( t ) = t \mathbf { i }$ , and let its velocity when t = 0 be $\mathbf { v } ( 0 ) = \mathbf { i } + \mathbf { k }$ . Find its speed when t = 2.

A) $\sqrt { 5 }$
B) $\sqrt { 6 }$
C) $\sqrt { 7 }$
D) $\sqrt { 8 }$
E) 3
F) $\sqrt { 10 }$
G) $\sqrt { 11 }$
H) $\sqrt { 12 }$