Me complete it. differentiate the types of collision

Alow cost, low earth orbit (leo) satellite is to be fabricated at a university, for subsequent launch by rocket. what are the constraints and objectives for selection of a material suitable for the satellite bus (i.e. the structure)? explain each in brief. (15 marks) b)suggest sources of data which could support the selection of materials for applications in space. (5 marks) c) set weights for the objectives listed in (2a) using the digital logic method. (5 marks)

What are the phases shown in a and d called?

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted