Question

1. Two identical 0.800-kg masses are pressed against opposite ends of a light spring of force constant 1.75 N/cm, compressing the spring by 11.0 cm from its normal length.

Part A

Find the speed of each mass when it has moved free of the spring on a frictionless, horizontal table.

Express your answer with the appropriate units.

2. A 15.0 kg fish swimming at 1.40 m/s suddenly gobbles up a 4.50 kg fish that is initially stationary. Neglect any drag effects of the water.

Part A

Find the speed of the large fish just after it eats the small one.

Part B

How much mechanical energy was dissipated during this meal?

Answer 1