Atrain is traveling down a straight track at 27 m/s when the engineer applies the brakes, resulting in an acceleration of −1.0 m/s2 as long as the train is in motion. how far does the train move during a 54-s time interval starting at the instant the brakes are applied?

Which of the following represents an upside-down image?

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?