Which best describes the motion of the object between 1 and 4 seconds

In order to place a satellite into orbit, it requires enough fuel to supply the necessary mechanical energy. into what types of mechanical energy does the fuel get transformed?

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?