Calcula la velocidad de un objeto que recorre 300 kilometros en dos horas a) 150 km/h b)151 km/h c)1400 m/s

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?