Question

1. (a) What is the magnitude of the momentum of a 10,000-kg truck whose speed is 15.0 m/s? (b) What speed must a 5,000-kg truck attain in order to have (i) the same momentum? (ii) the same kinetic energy? 2. A steel ball of mass 0.6500 kg is fastened to a chord that is 75.0 cm long and fixed at the far end. The ball is then released when the chord is horizontal. At the bottom of its path, the ball strikes a 3.50 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find (a) the speed of the ball and (b) the speed of the block, both just after the collision. 3. A 5.0 g clay is thrown horizontally into a 1.50 kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between the block and the surface is 0.25. The clay sticks in the block, which is observed to slide 0.15 m along the surface before stopping. What was the initial speed of the clay?

          1. (a) What is the magnitude of the momentum of a 10,000-kg truck whose speed is 15.0 m/s? (b) What speed must a 5,000-kg truck attain in order to have (i) the same momentum? (ii) the same kinetic energy?

2. A steel ball of mass 0.6500 kg is fastened to a chord that is 75.0 cm long and fixed at the far end. The ball is then released when the chord is horizontal. At the bottom of its path, the ball strikes a 3.50 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find (a) the speed of the ball and (b) the speed of the block, both just after the collision.

3. A 5.0 g clay is thrown horizontally into a 1.50 kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between the block and the surface is 0.25. The clay sticks in the block, which is observed to slide 0.15 m along the surface before stopping. What was the initial speed of the clay?

1. (a) What is the magnitude of the momentum of a 10,000-kg truck whose speed is 15.0 m/s? (b) What speed must a 5,000-kg truck attain in order to have (i) the same momentum? (ii) the same kinetic energy?

2. A steel ball of mass 0.6500 kg is fastened to a chord that is 75.0 cm long and fixed at the far end. The ball is then released when the chord is horizontal. At the bottom of its path, the ball strikes a 3.50 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find (a) the speed of the ball and (b) the speed of the block, both just after the collision.

3. A 5.0 g clay is thrown horizontally into a 1.50 kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between the block and the surface is 0.25. The clay sticks in the block, which is observed to slide 0.15 m along the surface before stopping. What was the initial speed of the clay?

Added by Melanie H.

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