Si Alfonso lanza hacia arriba una pelota de goma, considerando que la suelta desde una altura de 2m y con una velocidad de 50 m/s. ¿Qué altura alcanza la pelota cuatro segundos después de ser lanzada?

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

That is right sorry i was gonna answer but i already saw his