4. which of the following would happen to the moon if gravity no longer affected it ?

a. the moon would continue to move on its orbital path

b . the moon would stop moving altogether

c. the moon would move in a spiral toward earth

d. the moon would move in a straight line

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

If forces acting on an object are unbalanced. true or false

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system