1. Two boxes, A and B, placed next to each other on a horizontal, rough surface. An applied force acting on box A causes both boxes to accelerate at 2.60 m/s2 [right]. If the magnitude of the force of friction on box B is 28.3 N, calculate the force exerted by box B on box A. 8.5 kg 2. Blocks X and Y are attached to each other by a light rope and can slide along a horizontal, frictionless surface. Block X has a mass of 19 kg and block Y a mass of 5.0 kg. An applied force of 36 N [right] acts on block a) Calculate the action-reaction forces the blocks exert on each other. b) Suppose the magnitudes of the force of friction on blocks X and Y are 8.0 N and 4.0 N respectively. Calculate the action-reaction forces the blocks exert on each other. 3. Three blocks that are connected by strings are pulled along a frictionless surface by a horizontal force. a. What is the acceleration of each block? b. What are the tension forces in each of the strings? F1: 40k Ff; 6-0kg 2.0 kg ' g " 4. To minimize the environmental impact of building a road through a forest, a logger uses a team of horses to drag two logs, A and B, from the cutting location to a nearby road. A light chain connects log A with a mass of 150 kg to the horses' harness. Log B with a mass of 250 kg is connected to log A by another light chain. (a) The horses can pull with a combined force of 2600 N. The ground exerts a force of friction of magnitude 2400 N on the logs. Calculate the acceleration of the logs. (b) If the force of friction on log A is 900 N, calculate the force exerted by log B on log A. 5. Two girls, one of mass 40 kg and the other of mass 60 kg, are standing side by side in the middle of a frozen pond. One pushes the other with a force of 360 N for 0.10 s. The ice is essentially frictionless. (a) What is each girl's acceleration? (b) What velocity will each girl acquire in the 0.10 s that the force is acting? (c) How far will each girl move during the same time period