Give an example of a moving body which is in equilibrium​

Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?

In general what determines whether atoms will form chemical bonds?

Whithin which type of system is neither the total mass nor the total energy conserved ? a. open b. connected c. isolated d. closed