When dishes remain on a table when you yank the tablecloth beneath them, you're demonstrating
A) friction.
B) inertia.
C) constant motion.
D) F = 0.
Question 2
Estimate the number of times an average person's heart beats in a lifetime. Assume the average heart rate is 69 beats/min and a life span of 75 years.
A) 3 109 beats
B) 3 108 beats
C) 3 1010 beats
D) 3 107 beats