Unit 2 Quiz

A  velocity decreased.

B  speed remained constant, but the bus turned right.

C  velocity increased.

D  speed remained constant, but the bus turned left.

A  Newton’s First Law

B  Newton’s Second Law

C  Newton’s Third Law

D  Newton’s Law of Universal Gravitation

A  at its fastest speed.

B  at its average speed.

C  in retrograde motion.

D  at its slowest speed.

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

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

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

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

A  both asteroids orbit in the same amount of time.

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

C  LK0207 takes longer to orbit the Sun.

D  SK1409 takes longer to orbit the Sun.

A  Itokawa

B  more information is required to answer this question accurately

C  neither, both will take the same amount of time

D  Mathilde

A  5.2 years

B  27 years

C  2.08 years

D  9 years

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

B  It remains unchanged.

C  It becomes twice as strong as it was before.

D  It becomes half as strong as it was before.

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

B  decreasing

C  increasing

D  there is no gravity in space

A  Newton’s second law of motion

B  Newton’s first law of motion

C  An orbit

D  Newton’s third law of motion

A  False

B  True

A  Newton’s First Law

B  Newton’s Law of Universal Gravitation

C  Newton’s Second Law

D  Newton’s Third Law

A  Newton’s Second Law

B  Newton’s First Law

C  Newton’s Third Law

D  Newton’s Law of Universal Gravitation

A  1167 kg x m/s2

B  =1000 m/s2

C  8.57 x 10-4 m/s2

D  42000 m/s2

A  2.3 x 106 m/s2

B  123 m/s2

C  12.3 m/s2

D  1.23 x 107 m/s2

A  9.13 x 103 m/s2

B  91.33 m/s2

C  913 m/s2

D  9.13 x 104 m/s2

A  The gravitation pull of the Moon on the Earth

B  Strong winds across the oceans

C  The gravitational pull of Mars on the Earth

D  tsumani

A  Thor

B  Froda

C  Fralla

D  Frigga

A  False

B  True

A  unrelated values for its semimajor and semiminor axis distances.

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

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

D  equal values for its semimajor and semiminor axes.