An object has a mass of 50 kg. If the acceleration due to gravity is 9.8 m/s², what is its weight on Earth?
Correct: C
Weight (W) is the force exerted on an object due to gravity, and it is calculated as W = mass (m) × acceleration due to gravity (g). Given m = 50 kg and g = 9.8 m/s². So, W = 50 kg × 9.8 m/s² = 490 N.