PLS HELP ASAP! As the basketball player spins the ball on his finger, which of the following best describes its motion:

A. The ball is spinning at a constant velocity.
B. The ball is spinning at a constant speed.
C. The ball is accelerating as it is changing direction as it spins in a circle.
D. The ball is maintaining a constant acceleration.

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.