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HW Check

HW Check. 600 kgm /s 900 kgm /s They would crash into each other and would continue to move in the direction that the truck was going. 23 kgm /s 40 kg 940,000 m/s. Announcements and Prayer. Test will be Tuesday, 4/8 Portfolio check for E & F on Friday- check website. . Collisions.

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HW Check

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  1. HW Check • 600 kgm/s • 900 kgm/s • They would crash into each other and would continue to move in the direction that the truck was going. • 23 kgm/s • 40 kg • 940,000 m/s

  2. Announcements and Prayer • Test will be Tuesday, 4/8 • Portfolio check for E & F on Friday- check website.

  3. Collisions

  4. Conservation of momentum • Momentum can neither be created nor destroyed. • Momentum before an event must be equal to the momentum after an event.

  5. A 20,000 kg rocket ship is traveling back to Earth at a speed of 300 m/s. When it re-enters the atmosphere, a chunk falls off and the mass decreases to 15,000 kg. How fast is the ship moving?

  6. A .5 kg snowball is throw with a speed of 8 m/s. As the snowball moves, it melts and gets smaller. Its speed changes to 5 m/s. What’s the new mass?

  7. Observe… • https://www.youtube.com/watch?v=0LnbyjOyEQ8 • https://www.youtube.com/watch?v=OuA-znVMY3I

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