A 1000-kg whale swims horizontally to the right at a speed of 6.0 m/s. It suddenly collides directly with a stationary seal of mass 200 kg. The seal grabs onto the whale and holds fast. You can neglect any drag effects of the water during the collision.    What is the initial kinetic energy of the system?  What is the initial momentum system? What is their combined velocity immediately after the collision?

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