Avehicle travels at the same speed from point a to point b then from point b to point a which statement is correcta. the speed is the same as the velocity in both directions. b.the speed is negative in both directions c. the speed in one direction is positive but negative in the other directiond. the speed is positive either direction.

The speed is positive either direction.

Explanation:

elements make up everything, and they combine to make compounds.

the answer is c

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.