MRU(movimiento rectilineo uniforme) un movil viaja en linea recta con una velocidad media de 12metros /segundos durante 9segundos y luego con una velocidad media de 4.8metros/segundos durante 7 segundos siendo ambas velocidades al mismo sentido. a) cual es el desplazamiento total del viaje de 16 segundos? b) cual es la velocidad media del viaje completo?

a) 141.6m

b) 8.4m/s

Explanation:

a) to find the total displacement you use the following formula for each trajectory. Next you sum the results:

hence, the total distance is 141.6m

b) the mean velocity of the total trajectory is given by:

hence, the mean velocity is 8.4 m/s

c.is a substance that requires a small amount of energy per gram to raise its temperature; has strong cohesive forces between molecules.

explanation:

a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

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