The figure below shows a planet traveling in a clockwise direction on an elliptical path around a star located at one focus of the ellipse. When the planet is at point A,
A. its speed is constant.
B. its speed is increasing.
C. its speed is decreasing.
D. its speed is a maximum.
E. its speed is a minimum.
Answer: C
You might also like to view...
The surface of Io looks most like the pack ice of the Arctic Ocean of Earth
Indicate whether the statement is true or false
Two particles, each having a mass of 3.0 ?g and having equal but opposite charges of magnitude of 6.0 nC, are released simultaneously from rest when they are a very large distance apart. What distance separates the two at the instant when each has a speed of 5.0 m/s?
a. 4.3 mm b. 8.6 mm c. 7.3 mm d. 5.6 mm e. 2.2 mm
Driving eastward just before sunrise, if you observe the Moon in the eastern sky, its phase must be:
A) full moon. B) first quarter. C) waxing Gibbous. D) waning Crescent. E) new moon.
Which of the following is a key factor in explaining why many jovian moons have been more geologically active than the Moon or Mercury?
A) Jovian moons contain much more ice that can melt or deform at lower temperatures than can the rock and metal that make up the Moon and Mercury. B) The jovian moons are considerably larger than the Moon and Mercury and therefore have retained much more internal heat. C) The jovian moons probably have far more internal heat generated by radioactive decay than do the Moon or Mercury. D) Because of their greater distances from the Sun, the jovian moons receive much less heat from the Sun.