a multiple unit electric train has 800 tonne mass. The resistance to motion is 100N per tonne of the train mass. If the electric motors can provide 200 kN tractive force, how long does it take to accelerate the train to a speed of 90km h from rest.

1) Statement: Angle 2 and angle 5 are supplementary

Reason: Given

2) Statement : Angle 2 and angle 3 are congruent.

Reason: Vertically Opposite Angles are always congruent.

3) Statement: If angle 2 is congruent to angle 3 and and angle 2 is supplementary to angle 5, then angle 3 is supplementary to angle 5.

Reason: Substitution Property

4) Statement: Line l is parallel to line m.

Reason: Converse of the the Same-Side Interior Angles Theorem (If two lines are cut by a transversal and the consecutive interior angles are supplementary, then the lines are parallel.)