the block is sitting at rest on teh floor . The normal force on the block is 3.00 N find the mass of the block

m = 0.305 [kg]

Explanation:

When a body rests on a horizontal surface and is in balance we can say that normal force is the reaction of the weight of a body.

Weight is defined as the product of mass by gravitational acceleration.

where:

N = normal force = 3 [N]

g = gravity acceleration = 9.81 [m/s²]

m = mass [kg]

Now replacing:

truck y has a greater velocity than truck x.