The allowed shapes for the orbits of objects responding only to the force of gravity are
A) ellipses, parabolas, and hyperbolas.
B) ellipses only.
C) ellipses, spirals, and parabolas.
D) circles and ellipses.
A) ellipses, parabolas, and hyperbolas.
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Most asteroids orbit the Sun in the asteroid belt, which is located
a. between the orbits of Mars and Jupiter b. between the orbits of Neptune and Pluto c. beyond the orbit of Neptune d. none of the above
The Solar System is located about ________ from the center of the Milky Way.
A. 8 light-years B. 8 kiloparsecs C. 8 parsecs D. 8 AU
The velocity of an object as a function of time is given by v(t) = 2.00 m/s + (3.00 m/s) t - (1.0 m/s2) t2. Determine the instantaneous acceleration of the object at time t = 4.00 s
A) -2.00 m/s2 B) -5.00 m/s2 C) 1.00 m/s2 D) 0.00 m/s2 E) -1.00 m/s2
As a result of friction between internal parts of an isolated system
a. the total mechanical energy of the system increases. b. the total mechanical energy of the system decreases. c. the total mechanical energy of the system remains the same. d. the potential energy of the system increases but the kinetic energy remains the same. e. the kinetic energy of the system increases but the potential energy of the system remains the same.