In mechanics of deformable bodies, it refers to the ability of the structure to resist changes in shape like bending, twisting, or stretching. What is the answer

Hardness is best defined as which one of the following: Group of answer choices energy absorbed by a material when an object strikes its surface resistance to bending resistance to permanent indentation resistance to scratching

2. In engineering, the modulus of elasticity is a way to measure how much an object deforms along an axis when opposing forces are applied among that axis. The formula can be expressed as E (F2-F)Lo where E is (82-81)A' %3D the modulus of elasticity, F is the axial force, & is a deformation measure, Lo is the original length of the object, and A is the cross-sectional area. Part A: Reaange the elasticity formula to find the cross-sectional area, A.

Please annotate the attached image to highlight the different phases of a polymer stress/strain graph. From the attached graph, calculate the following: 1-modulus of elasticity 2-tensile strength 3-the ductility in % of elongation 4- yield strength at a strain offset of 0.002