Performing the Chemical Test by Reagent Strip The urine must be collected using appropriate technique and be tested within one hour ofcollection. If tests cannot be performed within this time, the specimen may be refrigerated for upto 8 hours.
Elastic and Inelastic Collisions. A perfectly elastic collision is defined as one in which there is no loss of kinetic energy in the collision. An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision. Any macroscopic collision between objects will convert some of the kinetic energy into internal energy and other forms of energy, so no large scale impacts are perfectly elastic.
#2. Dadface. If there is no loss of kinetic energy it is a completely elastic collision.Such collisions can occur with atomic scale objects such as gas molecules but not with macroscopic objects.If there is a total loss of kinetic energy it is a completely inelastic collision.Total energy and momentum are conserved in all collisions.