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.

double the distance = divide strength by 4