How long does it take for an airplane to change its velocity from 140 m/s to 180 m/s if its acceleration is 4.0 m/s?? How far does it travel during this time? (10. s, 1600 m)
Proof please

Calculate the kinetic energy of earth due to its spinning about its axis. krot = j compare your answer with the kinetic energy of the orbital motion of earth's center of mass about the sun. assume earth to be a homogeneous sphere of mass 6.00 1024 kg and radius 6.40 106 m. the radius of earth's orbit is 1.50 1011 m.

How does an observation about an object differ from an inference about that object

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign