[grade 12 momentum -physics questions need assisance with 6.3][1]
How to calculate the final velocity of a body given two graphs of two objects of net force versus time [1]: https://i.sstatic.net/u7UZq.jpg
In 6.1 you have calculated the total impulse p for Q. To get from impulse to velocity you can use the definition of impulse: p = mv. Therefore you need the mass m of the object Q, which seems not be given. With the data given the answer would be:
final velocity = v = 60 / m in m/s
