The planets never travel in a straight line as they orbit the Sun. According to Newton's second law of motion, this must mean that
A. the planets are always accelerating.
B. the planets have angular momentum.
C. the planets will eventually fall into the Sun.
D. a force is acting on the planets.
Answer:D
The planets never travel in a straight line as they orbit the Sun. According to Newton's second law of motion, this must mean that
A. the planets are always accelerating. B. the planets have angular momentum. C. the planets will eventually fall into the Sun. D. a force is acting on the planets.