(2a) A 4750.0 kg open train car is rolling on frictionless rails at 24.3 m/s when...

(2a) A 4750.0 kg open train car is rolling on frictionless rails at 24.3 m/s when it starts pouring rain. A few minutes later, the car's speed is 18.0 m/s. What mass of water has collected in the car?

(2b) Two 485.0 g blocks of wood are 2.65 m apart on a frictionless table. A 23.1 g bullet is fired at 384.5 m/s toward the blocks. It passes all the way through the first block, then embeds itself in the second block. The speed of the first block immediately afterward is 1.07 m/s. What is the speed of the second block after the bullet stops?

(2c) A 2.67 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest. The composite system moves with a speed equal to one third the original speed of the 2.67 kg sphere. What is the mass of the second sphere?

Expert Solution

genius_generous answered 1 year ago

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