The average mass of a rhinoceros calf is 45 kg. What is its weight in newtons? Round your answer to the nearest whole number.

Weight is calculated by multiplying mass by gravitational field strength: weight = mass × 9.8 N/kg. For a 45 kg calf, 45 × 9.8 = 441 N, so the correct choice is D, 441 N.

AI-written and checked against the verified answer.