The movement of a pool ball, after being struck by a cue, is an example of
A) Newton's first law of motion.
B) Newton's second law of motion.
C) Newton's third law of motion.
D) the universal law of gravitation.
E) conservation of momentum.
Question 2
Which of the following is not considered crucial for life to exist on some world?
A) liquid water
B) a source of energy that can be used by life
C) a source of nutrients
D) an atmosphere