what is the final pressure of the gas if in the beginning it was 2 Pascals and had a volume of 3 liters, the final volume of this gas will be 2 liters, temperature constant.​

A6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 3.0 seconds. what is the speed of the cart at the end of this 3.0 second interval? (1) 1.5 m/s (3) 3.0 m/s (2) 5.5 m/s (4) 7.0 m/s