Describe the motion of the car as it moved across the floor

What is the final velocity of the initial velocity of 25 and -50?

Could someone . i have tried to solve myself but my calculation is off

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?