The base unit for acceleration is m s ^-2
Collective bargaining increases the bargaining power of workers as it is difficult for employers to replace their entire workforce.
Explanation:
Through collective bargaining working people can negotiate with their employers through their working unions and determine their terms of employment, working hours,leave, payment etc. It is the best way to solve problems at workplace and people get better wages and can work in safer conditions.
Collective bargaining gives better confidence to workers as they stand as a group and the employers will have to accept their demands as they find it difficult to replace the entire workforce.
The answer is probably galaxy clusters.