Yes, I knew someone like the author’s grandmother. It was my own grandmother who passed away recently. The intense sense of loss is very heart-wrenching as I spent almost fifteen years of my life with her. OR No, I have never known someone the way the author knew his grandmother. Thus, I have never felt the sense of grief presented in the story.
Figure 8.9 shows the strain-stress curve for a given material. What are (a) Young’s modulus and (b) approximate yield strength for this material?

Two identical ball bearings in contact with each other and resting on a frictionless table are hit head-on by another ball bearing of the same mass moving initially with a speed V. If the collision is elastic, which of the following (Fig. 5.14) is a possible result after collision ?
