Question: Please answer these questions 9. Wesker throws a rock straight upwards with a velocity of 20 m/s off a bridge that is 125 m high

Please answer these questions

9. Wesker throws a rock straight upwards with a velocity of 20 m/s off a bridge that is 125 m high relative to the water. Find a. The greatest height that the rock reaches (relative to the water) b. The speed of the rock as it passes Wesker on the way to the water c. The speed of the rock just as it strikes the water 10. Fill in the following chart. Assume the train has a speed of 3 m/s at the top (neglect friction) (2) 3 PE - m - 50 kg PE - PE - PE = KE : 5 'm. v2 KE = KE KE - KE - ME -LIYS ME - 2185 ME - 2185 ME - 2185 V = h - PE : mig. h ME = KE+PE 4 m 3 m y =6 m's h = ? 3

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