Horizontal circular motion questions:

1. if net force of an object is constant in magnitude and always directed perpendicular to its velocity, the speed of an object is
a. decreasing
b. increasing
c. zero
d. constant

2. the net force on a vehicle traveling at a constant speed on a curved path points
a. in the direction of motion
b. to the center of curvature
c. opposite the direction of motion
d. away from the center of curvature

found in the nucleus

has mass of one amu

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                                         : )