A uniform rigid thin rod of length 1 m and mass 2.08 kg is moving on a horizontal xy plane. At a certain instant when the rod is along the y-axis, the instantaneous velocities of the two ends of the rod, A and B, are (1.97 m/s) i vector and (10.27 m/s) i vector, respectively. What is the total kinetic energy of the rod at this moment in units of J?

28. evolution

29. environment, survive, offspring  

explanation:

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

there are no contact forces mentioned on the list of choices that you've provided.