6. Which of these statements is true with respect to Newton's 2nd Law? a. Acceleration is inversely proportional to net force.
b. Acceleration is directly proportional to mass.
c. The three variables in Newton's 2nd Law are net force, velocity, and mass.
d. If the force is constant and the mass increases, the acceleration decreases.
e. If the force is constant and the mass increases

The momentum of an isolated system is conserved a) only in inelastic collisions. b) only in elastic collisions. c) in both elastic and inelastic collisions

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.