B2. A 10 kg block is initially at rest on a horizontal surface. The coefficient of...

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B2. A 10 kg block is initially at rest on a horizontal surface. The coefficient of static friction is 0.6, and the coefficient of dynamic friction is 0.4. A force P is applied to the block. This force varies linearly with time as indicated below: Force, P (Newtons) 25 (a) SICI - Time (seconds) Represent the information on a free body diagram, including the magnitude of all forces. [4 marks] (b) Use the example above to define the difference between static and dynamic friction, and calculate the time when the block starts to move. [6 marks] (c) Determine the velocity after 4 seconds. Justify your method with respect to Newton's law(s) [7 marks] B2. A 10 kg block is initially at rest on a horizontal surface. The coefficient of static friction is 0.6, and the coefficient of dynamic friction is 0.4. A force P is applied to the block. This force varies linearly with time as indicated below: Force, P (Newtons) 25 (a) SICI - Time (seconds) Represent the information on a free body diagram, including the magnitude of all forces. [4 marks] (b) Use the example above to define the difference between static and dynamic friction, and calculate the time when the block starts to move. [6 marks] (c) Determine the velocity after 4 seconds. Justify your method with respect to Newton's law(s) [7 marks]