A 2.0 kg object is dropped from a height of 10 m. Calculate the speed of the object after it has fallen 5.0 m, assuming there is no air resistance. Give your answer to 2 significant figures.

2 (KG) × 9.8 (N/KG) × 5 (M) = 98 J Velocity = √² ˣ ⁹⁸⁄₂ = 9.8 N/M We know that kinetic energy was 98 J because the total amount of energy that was lost in was store, is the same amount of energy gained in the other. Since the question didn't tell us what the Gravitational field strength was, we use 9.8 N/KG.