What is the magnitude of the force needed to keep a 60 newton rubber block moving across level, dry asphalt in a straight line at a constant speed of 2.0 meters per second

F = 40.2 N

Explanation:

Weight of the rubber block, W = 60 N

If m is the mass of the rubber block,

m = 6.12 kg

We know that the coefficient of friction between rubber block and dry asphalt is,

The relation between the coefficient of friction and the force is given by :

Here, N = W

F = 40.2 N

So, the magnitude of force needed to keep a 60 newton rubber block moving across level,dry asphalt in a straight line is 40.2 N. Hence, this is the required solution.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.