Shawn is traveling away from you at a speed of 120 km/hr. He ...

[haleyc112]

Shawn is traveling away from you at a speed of 120 km/hr. He throws a baseball that, according to him, is going at 100 km/hr in your direction. What do you see the ball doing?
 
  A) You see the ball traveling away from you at 120 km/hr.
  B) You see the ball traveling away from you at 100 km/hr.
  C) You see the ball traveling away from you at 220 km/hr.
  D) You see the ball traveling toward you at 20 km/hr.
  E) You see the ball traveling away from you at 20 km/hr.

Question 2

The lunar month is longer than the sidereal month because
 
  A) the Moon completes the cycle of lunar phases before it completes a full orbit around Earth.
  B) the Moon has to complete more than one full orbit around Earth to complete the cycle of lunar phases.
  C) the Moon orbits Earth faster than Earth orbits the Sun.
  D) the Moon orbits Earth faster than Earth rotates.
  E) the lunar month is based on the Moon's orbit, while the sidereal month is based on Earth's orbit.

[sarahccccc]

Answer to Question 1

E

Answer to Question 2

B

[haleyc112]

Excellent

[frankwu0507]

TYSM