A 1.0 kg mass is at rest on a counter top. There is a force of kinetic friction of 2.5 N acting on the mass on the counter top. A string runs from the mass to the edge of the counter where it passes over a pulley and attaches to a hanging 500 g mass, as illustrated. a) Assuming the masses start moving, what is the acceleration of the masses? (3 marks) b) What is the tension in the string? (2 marks) 1.0kg 500g