Two concrete spans of a 250-m-long bridge are placed end to end so that no room is allowed for expansion. if a temperature increase of 20.0c occurs, what is the height y to which the spans rise when they buckle?

i want to say that the answer is b.

i'm assuming you're asking for the elevator's final velocity.

consider the following equation:

vf = vi + aδt

vf is the final velocity.

vi is the initial velocity.

a is the acceleration.

δt is the amount of elapsed time.

given values:

vi = 12.60m/s

a = -3.60m/s²

δt = 2.97s

substitute the terms in the equation with the given values and solve for vf:

vf = 12.60 - 3.60×2.97