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A 7.80-g bullet moving at 460 m/s penetrates a tree trunk to a depth of 6.40 cm.? (a) Use work and energy considerations to find the average frictional force that stops the bullet. (b)...

Two objects (m1 = 4.70 kg and m2 = 3.45 kg) are connected by a light string passing over a light, frictionless pulley. The 4.70-kg object is released from rest at a point h = 4...

Two blocks, A and B (with mass 45 kg and 125 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic...

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