An object made from brass had an initial temperature of 20 Degrees Celsius, later that day it’s temperature was recorded to be 38 Degrees. The lead object had an initial length 17m. Calculate the change in objects length.

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the