A 345 kg block has a weight of __ on earth. A) 345 kg
B) 345 pounds
C) 345 N
D) 34.5 N

The correct answer is;

3450 N

Explanation:

The given parameters are;

The mass of the block = 345 kg

The location of the block = Earth

The weight, W, of an object on Earth is given by the mass of the object × The acceleration due to gravity

The acceleration due to gravity on Earth ≈ 10 m/s²

Therefore, we have;

The weight of the block on Earth = The mass of the block × The acceleration due to gravity of the block = 345 kg × 10 m/s²

∴ The weight of the block on Earth = 3450 kg·m/s² = 3450 N

A 350 kg block has a weight of 3450 N

(Therefore, a 34.5 kg block has a weight of 345 N)