21. When a body is moved from the equator to the north and south poles, its weight . . . . . . . .
22. A truck slips off the edge and falls to the ground in 0.8 seconds. Which height will the edge be from the ground? (g = 10m/s2)
23. Match the following.
List-I
List-II
a. Weight of a body is maximum
1. With increase in height from the surface of earth
b. Weight of a body decreased
2. Null point
c. Weight of a body increases
3. All the surface of earth
d. Weight of the body is zero
4. When body is moved from null point towards moon
List-I | List-II |
a. Weight of a body is maximum | 1. With increase in height from the surface of earth |
b. Weight of a body decreased | 2. Null point |
c. Weight of a body increases | 3. All the surface of earth |
d. Weight of the body is zero | 4. When body is moved from null point towards moon |
24. If a ball is thrown upwards with a velocity of 40 m/s, then what will be the magnitude of its displacement after 6 seconds? (g = 10 m/s2)
25. Weightlessness is
26. The weight of human body is
27. The weight of an object on Earth is 200 N and mass is 20 kg. What will be the value of gravitational acceleration?
28. What is the value of acceleration due to gravity on the surface of the Earth?
29. The value of 'g' decreases according to-
30. Assertion (A): The weight of human being on the Moon is $$\frac{1}{6}$$ in comparison to Earth.
Reason (R): The Moon does not have gravity like Earth.
Select the answer.
Reason (R): The Moon does not have gravity like Earth.
Select the answer.
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