6. A 100 kg bag of sand has a weight on 100 N. When dropped its acceleration is what?

It seems you might have a little mix-up with the weight and mass units! A 100 kg bag of sand actually has a weight of more than 100 N, specifically about 980 N when calculated using the formula Weight = mass × gravitational acceleration (W = mg, where g ≈ 9.8 m/s²). When the bag is dropped, it experiences an acceleration equal to the acceleration due to gravity, which is approximately 9.8 m/s² downward, assuming air resistance is negligible. In free fall, the bag accelerates towards the Earth due to gravity. If you're ever in a scenario involving falling objects, the key takeaway is that they'd all fall at the same rate (ignoring air resistance), demonstrating the beauty of gravity's uniformity!