Amouse runs across a 4.56 m kitchen floor in 3.42 seconds . what is the velocity of the mouse

Velocity is the change in position divided by the time . In your problem, it should be expressed in meters per second. To solve, you must divide the distance, 4.56 meters, by the time it takes to travel that distance, which is 3.42 seconds >   4.56/3.42 = 1.333 meters per second is the velocity of the mouse

Crust,mantle,core,earth