A comet is observed to pass 1.50 $\times$ 10⁸ m from the surface of the sun.The sun's radius is 6.96 $\times$ 10⁸ m.What is the speed of the comet at this point,if its speed when passing the Earth's orbit,1.50 $\times$ 10¹¹ m from the sun's center,is 25km/s? A) 561 km/s B) 618 km/s C) 562 km/s D) 585 km/s

Question

Quizplus · Accepted Answer

Using the conservation of energy, the speed of the comet can be calculated. The gravitational potential energy and kinetic energy at both points are equated, leading to the speed of approximately 561 km/s at the closest approach to the sun.

A Comet Is Observed to Pass 1 ×\times× 108 M from the Surface of the Sun

A Comet Is Observed to Pass 1 $\times$ 10⁸ M from the Surface of the Sun