A Proton Moving Along the X Axis Has an Initial

Multiple Choice

A proton moving along the x axis has an initial velocity of 4.0 × 106 m/s and a constant acceleration of 6.0 × 1012 m/s². What is the velocity of the proton after it has traveled a distance of 80 cm?

A) 5.1 × 106 m/s
B) 6.3 × 106 m/s
C) 4.8 × 106 m/s
D) 3.9 × 106 m/s
E) 2.9 × 106 m/s