A car slows down from -27.7 m/s to -10.9 m/s while undergoing a displacement of -105 m. What was it’s acceleration?

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

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?