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GRAVITATION REVISION REVISION – TEXTBOOK STANDARDIZED TEST TEXTBOOK PAGE 49 GRADE 11 GENERAL PHYSICS TERM 1 ASSIGNMENT 1 NAME OF THE STUDENT: ANSWER ANY TWO OF THE FOLLOWING QUESTIONS: 1. A boat is traveling east at a speed of 3.8 m/s. A person walks across the boat with a velocity of 1.3 m/s south. a. What is the person’s speed relative to the water? b. In what direction, relative to the ground, does the person walk? 2. An airplane traveling at 201 m/s makes a turn. What is the smallest radius of the circular path (in kilometers) the pilot can make and keep the centripetal acceleration under 5.0 m/𝑠 2 ? 3. You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high. a. How long does it take the stone to reach the bottom of the cliff? b. How far from the base of the cliff does the stone hit the ground? c. What are the horizontal and vertical components of the stone’s velocity just before it hits the ground?

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