Convert 300mil per hr to km per hr​

The gravitational attraction between two objects will if one object acquires more mass .

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

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