A weight lifter lifts a set of 212 kg weights to a height of 1.75 m. How much
potential energy to the weights now have?

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency