Unit 2 Quiz

A  speed remained constant, but the bus turned left.

B  velocity decreased.

C  velocity increased.

D  speed remained constant, but the bus turned right.

A  Newton’s Third Law

B  Newton’s Second Law

C  Newton’s Law of Universal Gravitation

D  Newton’s First Law

A  at its average speed.

B  in retrograde motion.

C  at its slowest speed.

D  at its fastest speed.

A  the square of the planet’s semimajor axis is equal to the cube of its orbital period.

B  that no planetary system can have a parent star at the center of its orbit.

C  planets travel along their orbit with greater speeds when they are closer to their parent star than when they are further away.

D  planetary orbits are ellipses with the Sun at one focus.

A  the orbital periods cannot be compared without knowing the eccentricity of SK1409’s orbit

B  both asteroids orbit in the same amount of time.

C  LK0207 takes longer to orbit the Sun.

D  SK1409 takes longer to orbit the Sun.

A  neither, both will take the same amount of time

B  more information is required to answer this question accurately

C  Itokawa

D  Mathilde

A  5.2 years

B  2.08 years

C  27 years

D  9 years

A  It remains unchanged.

B  It becomes twice as strong as it was before.

C  It becomes half as strong as it was before.

D  It becomes a quarter as strong as it was before.

A  increasing

B  decreasing

C  there is no gravity in space

D  they are so far away from each other, there is not gravitational attraction between the two galaxies

A  An orbit

B  Newton’s first law of motion

C  Newton’s second law of motion

D  Newton’s third law of motion

A  True

B  False

A  Newton’s First Law

B  Newton’s Third Law

C  Newton’s Law of Universal Gravitation

D  Newton’s Second Law

A  Newton’s Second Law

B  Newton’s First Law

C  Newton’s Third Law

D  Newton’s Law of Universal Gravitation

A  8.57 x 10-4 m/s2

B  42000 m/s2

C  =1000 m/s2

D  1167 kg x m/s2

A  123 m/s2

B  1.23 x 107 m/s2

C  2.3 x 106 m/s2

D  12.3 m/s2

A  9.13 x 104 m/s2

B  9.13 x 103 m/s2

C  91.33 m/s2

D  913 m/s2

A  The gravitation pull of the Moon on the Earth

B  Strong winds across the oceans

C  tsumani

D  The gravitational pull of Mars on the Earth

A  Fralla

B  Thor

C  Froda

D  Frigga

A  False

B  True

A  equal values for its semimajor and semiminor axes.

B  unrelated values for its semimajor and semiminor axis distances.

C  a semimajor axis distance that is half as large as the semiminor axis distance.

D  a semimajor axis distance that is twice as large as the semiminor axis distance.