On a 60km track travels the first 30km with a uniform speed of 30km/h. How fast must the train travel the next 30km so as to average 40km.h for the entire trip?

Advanced Engineering Materials topics include: Nano phase materials, metallic glasses, physical quantity dimension analysis, units and measurements, motion and mechanics. Advanced engineering materials are materials that are specifically engineered to exhibit enhanced properties that confer superior performance relative to conventional materials.  Advanced materials exhibit mechanical and physical properties beyond the levels of widely used materials like steel, aluminum, and magnesium.  Some examples of advanced materials include: Advanced alloys, Advanced polymers, Biopolymers, Porous... Show more

Advanced Engineering Materials topics include: Nano phase materials, metallic glasses, physical quantity dimension analysis, units and measurements, motion and mechanics.

Advanced engineering materials are materials that are specifically engineered to exhibit enhanced properties that confer superior performance relative to conventional materials. 

Advanced materials exhibit mechanical and physical properties beyond the levels of widely used materials like steel, aluminum, and magnesium. 
Some examples of advanced materials include: Advanced alloys, Advanced polymers, Biopolymers, Porous materials. 

Some of the most common materials used in engineering include: Metals, Polymers, Ceramics, Composites, Semiconductors. 
When selecting a material for a particular application, engineers consider various factors such as the material's strength.

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