An object initially traveling at 20 Meters per second west accelerates uniformly at 4.0 meters per second squared east for 2.0 seconds The displacement of the object during these 2.0 seconds is

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane