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Which of the following statements is/are correct for centripetal force?
1. It keeps the body moving along the circular path.
2. The object flies off along a straight line.
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Which of the following statements is/are correct for gravitational force?
1. All objects in the universe attract each other.
2. The force between two objects is directly proportional to the square of the
distance between them.
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Which of the following statements is/are correct for Kepler\’s laws?
1. The orbit of a planet is an circle.
2. The cube of the mean distance of a planet from the Sun is proportional to the
square of its orbital period.
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Which of the following is/are the applications of gravitational force?
1. the force that binds us to the earth;
2. the motion of the moon around the earth;
3. the motion of planets around the Sun.
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Which of the following is/are the correct for thrust and pressure?
1. The force acting on an object perpendicular to the surface is called thrust.
2. The thrust on unit area is called pressure.
3. SI unit of pressure is called pascal.
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