1. A 1200 kg roller coaster is given an initial velocity of 28 m/s (not the...

1. A 1200 kg roller coaster is given an initial velocity of 28 m/s (not the answer to problem 7) and travels uphill to a height of 30m above the ground. What is the velocity at the top of the hill?

2. A 1200 kg roller coaster is given an initial velocity of 28 m/s (not the answer to problem 7) and travels uphill to a height of 30m above the ground, then drops to a height of 13m above the ground. What is the final velocity?

3. The speed of a 1200 kg roller coaster is clocked at 15 m/s while at the top of hill of unknown height. To stop the ride, it runs into a large spring (k = 10000) and compresses it a distance of 10m before locking in place (to keep it from springing back the other way). What was the height of the hill when its speed was registered?

4. A 1200 kg roller coaster is traveling at 10 m/s. What is the magnitude of its momentum?

5. A 1200 kg roller coaster is traveling at 10 m/s when the train breaks mid-ride. One third of it (400 kg) slows down to 6 m/s. What is the velocity of the other two thirds (800 kg)?

6. A 1200 kg roller coaster train is traveling at 10 m/s when it collides with another broken train of mass 1000kg (no people on it) that is at rest on the tracks. The two trains stick together (perfectly inelastic). What is the resulting velocity of the two-train combination?

7. A 1200 kg roller coaster is traveling at 10 m/s when it collides with another broken train of mass 1000kg (no people on it) that is at rest on the tracks. The two trains bounce off each other (perfectly elastic). If the broken train (1000kg train) leaves at 11 m/s, what is the resulting velocity of the 1200 kg train?

Expert Solution

genius_generous answered 2 years ago

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