Unit 2 Quiz

A  speed remained constant, but the bus turned right.

B  speed remained constant, but the bus turned left.

C  velocity increased.

D  velocity decreased.

A  Newton’s Second Law

B  Newton’s Third Law

C  Newton’s First 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  planetary orbits are ellipses with the Sun at one focus.

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

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

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

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  SK1409 takes longer to orbit the Sun.

D  LK0207 takes longer to orbit the Sun.

A  more information is required to answer this question accurately

B  Mathilde

C  Itokawa

D  neither, both will take the same amount of time

A  2.08 years

B  5.2 years

C  9 years

D  27 years

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

B  It becomes twice as strong as it was before.

C  It remains unchanged.

D  It becomes half as strong as it was before.

A  decreasing

B  increasing

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  Newton’s third law of motion

B  An orbit

C  Newton’s second law of motion

D  Newton’s first law of motion

A  True

B  False

A  Newton’s First Law

B  Newton’s Second Law

C  Newton’s Third Law

D  Newton’s Law of Universal Gravitation

A  Newton’s First Law

B  Newton’s Second Law

C  Newton’s Third Law

D  Newton’s Law of Universal Gravitation

A  1167 kg x m/s2

B  42000 m/s2

C  =1000 m/s2

D  8.57 x 10-4 m/s2

A  2.3 x 106 m/s2

B  1.23 x 107 m/s2

C  12.3 m/s2

D  123 m/s2

A  9.13 x 103 m/s2

B  91.33 m/s2

C  9.13 x 104 m/s2

D  913 m/s2

A  The gravitation pull of the Moon on the Earth

B  tsumani

C  Strong winds across the oceans

D  The gravitational pull of Mars on the Earth

A  Fralla

B  Thor

C  Frigga

D  Froda

A  True

B  False

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

B  unrelated values for its semimajor and semiminor axis distances.

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

D  equal values for its semimajor and semiminor axes.