Final answer:
The largest pressure that a 5 N block can exert on the ground is 625 N/m².
Step-by-step explanation:
Pressure is defined as the force exerted per unit area, so to find the pressure exerted on the ground by the block, we need to divide the force (5 N) by the area of the block.
The area of the block can be found by multiplying its dimensions: 0.1 m x 0.2 m x 0.4 m = 0.008 m³.
Therefore, the pressure exerted on the ground by the block is:
Pressure = Force / Area
Pressure = 5 N / 0.008 m³
Pressure = 625 N/m²
So, the largest pressure that the 5 N block can exert on the ground is 625 N/m².