In kepler's model of the solar system, the planets move around the sun in orbits.
a. circular
b. elliptical
c. epicyclic
d. continuously changing

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.

What is the mass of the same rock on the earth

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.