The planet in the orbit shown in the drawing obeys Kepler s 2nd Law.BDuring which of the portions of the planet's orbit would the planet experience an increase in speed for at least one moment?A. Only during one of the portions shown.B. During two of the portions shown.C. During three of the portions shown.D. During four of the portions shown.O E. None of the above.

According to Kepler's 2nd law the area of A, B, C and D are same. So, the planet is fastest at perihelion (closest) and slowest at aphelion (farthest). So, in our case the planet will be slowest at A and fastest at CNow, if the planet starts from the slowest position (aphelion) at A, its speed will increase after reaching the aphelion and will farther increase at position B and it will farther increase at position C. So, at position C it will attend its highest speed. So, from C to D the speed will decrease. The speed will farther decrease from C to A attending the lowest speed at A. Hence it will complete 1 full rotation. So, the planet will experience an increase in speed at portion A after reaching aphelion, all the way in portion B and upto perihelion at portion C. So, the answer is, during three of the portions shown

Answered: During which of the portions of the…

Science

Advanced Physics

During which of the portions of the planet's orbit would the planet experience an increase in speed for at least one moment?