Final answer:
The force exerted on the block by the Earth can be calculated using Newton's second law of motion.
Step-by-step explanation:
The force exerted on the block by the Earth can be calculated using Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a). In this case, the force exerted by the Earth is equal to the weight of the block, which is equal to the mass of the block multiplied by the acceleration due to gravity.
F = m * a
Since the weight is the force exerted by the Earth on the block, the force exerted on the block by the Earth is equal to its weight.