Alfred Binet and his colleague Theodore Simon originally developed a test to measure a student's abilities to..

A. help identify "slow" children so they could be eliminated from the educational system

B. to keep foreigners from migrating to and settling down in France

C.. prove that men are more intelligent than women

D. help the French government determine which grade a student should be placed in

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?