11. Which condition does the body occur during free fall?
12. If satellite is shifted toward the earth. Then the time period of satellite will be
13. Kepler discovered
14. Consider the following statements.
1. According to Kepler's first law, each planet moves in an elliptical orbit around the sun, the sun being at one of the foci of the ellipse.
2. According to Kepler's Second Law, the radius vector of any planet relative to the sun sweeps out equal areas in equal times, that is the areal velocity of the radius vector of the planet is constant.
Which of the statements given above is/are correct?
1. According to Kepler's first law, each planet moves in an elliptical orbit around the sun, the sun being at one of the foci of the ellipse.
2. According to Kepler's Second Law, the radius vector of any planet relative to the sun sweeps out equal areas in equal times, that is the areal velocity of the radius vector of the planet is constant.
Which of the statements given above is/are correct?
15. The mass of an object on Earth is 10kg. What is weight of object on Earth?
16. Acceleration due to gravity of planet decreases with . . . . . . . .
17. Which of the following statements is true about the motion of planets-
18. It is easier to carry two buckets of water in one hand each than to carry only one in one hand because
19. Gravitational acceleration at the surface of the Earth is 9.8 m/s2. What will be the approximate acceleration value from the Earth's surface at $${\frac{1}{{10}}^{th}}$$ the height of its radius?
20. A person can jump higher on the moon's surface than on the earth because
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