This incident was not unique. Fatalities from welding and hot work are often are associated with confined spaces and the areas adjacent to these confined spaces . The CSB has identified over 60 fatalities since 1990 due to explosions and fires from hot work activities on tanks, which are, of course, confined spaces.
moâ¢menâ¢tum. 1. force or speed of movement; impetus, as of a physical object or course of events: a career that lost momentum. 2. Mech. a quantity expressing the motion of a body or system, equal to the product of the mass of a body and its velocity.
I think you mean conservation of momentum. Conservation means to keep or to save. In this phrase, it means that momentum (velocity X mass) is conserved. Meaning that the total momentum of any closed system (one not affected by external forces) cannot be changed. Momentum is a vector quantity-it has direction.ating Newest Oldest. Best Answer: Actually, it is conservation, NOT conversation of momentum, which means that the total momentum of a closed physical system (i.e. no external forces acting on the system) remains the same always, no matter what happens over time.