Un cuerpo se mueve, partiendo del reposo, con una aceleración constante de 5 [m/s²]. Calcule: La velocidad al cabo de 5[s], la distancia que recorrió en los primeros 3[s]

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.