Frank stands still while throwing a dart toward a target with a speed of 25 m/s. what is the speed of the dart observed by frank compared to the speed observed by a stationary observer? the speed is 25 m/s for both people. the speed is greater than 25 m/s for frank only. the speed is greater than 25 m/s for the observer only. the speed is less than 25 m/s for both people.

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?