6.- Un cuerpo de 30 Kg lleva rapidez de 20mts/seg y se le aplica una fuerza constante de 30 Nw durante 80 seg. Calcular: - La aceleración
- La rapidez al cabo de 6 seg.
- La distancia recorrida en los 6 seg.

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?

Asign is hung between two cables as illustrated below. if the sign weighs 350 n, what is the tension (in n) in each cable?