Which materials, including polystyrenes, can be recycled? polymers thermoplastics ceramics composites

What property of an object determines its inertia?

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2.

Describe the three ray tracing steps used to identify an image for the given situation.