A. 780 N
B. 88 kg
C. 882 N
D. 690N
🧠 Explanation:
The weight of a 90 kg body on Earth is 882 N, calculated using the formula weight = mass × gravity (90 × 9.8 = 882 N). Weight, a force measured in Newtons, depends on Earth’s gravitational acceleration (9.8 m/s²). This concept, fundamental in physics, applies to engineering and everyday scenarios like measuring loads. It distinguishes mass (kg) from weight (N), crucial for scientific accuracy. Studied in mechanics, this calculation ensures precise force assessments, supporting applications in construction, aerospace, and fitness, where understanding gravitational effects is essential for safety and efficiency.
