A1.0 × 10^3-kilogram car travels at a constant
speed of 20. meters per second around a
horizontal circular track. the diameter of the
track is 1.0 × 10^2 meters. the magnitude of the
car’s centripetal acceleration is
(1) 0.20 m/s2 (3) 8.0 m/s2
(2) 2.0 m/s2 (4) 4.0 m/s2

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                                         : )

truck y has a greater velocity than truck x.