A rock attached to a string continuously moves in circles with a 3.11 radius, completing a revolution every 7 seconds. What is the period of its motion?

  7 seconds

Explanation:

The period is the time required for the rock to return to its original location. Since it makes one full revolution in 7 seconds, the period is 7 seconds.

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.