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प्रश्न
______ is used to change the speed of the car.
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उत्तर
Acceleration is used to change the speed of the car.
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संबंधित प्रश्न
Why does the velocity of a stone thrown vertically upwards decreases?
The value of gravitational acceleration (g) is ______ at the equator.
Write scientific reasons.
The weight of an object varies on different planets.
The acceleration due to gravity on moon is `(1/6)^"th"` times the acceleration due to gravity on earth. If the ratio of the density of earth 'ρe' to the density of moon 'ρm' is `5/3`, then the radius of moon 'Rm' in terms of the radius of earth 'Re' is ______.
The radius of the orbit of a geostationary satellite is (mean radius of the earth R, angular velocity about an axis in ω and acceleration due to gravity on earth's surface is (g) ______.
In the relation F = `"G M" "m"//"d"^2`, the quantity G
A lift of mass 'm' is connected to a rope which is moving upward with maximum acceleration 'a'. For maximum safe stress, the elastic limit of the rope is 'T'. The minimum diameter of the rope is ______.
(g = gravitational acceleration)
If the surface is smooth, the acceleration of the block m2 will be ______.

Which formula correctly represents the acceleration due to gravity at Earth's surface?
The value of acceleration due to gravity at Earth’s surface is 9.8 ms−2. The altitude above its surface at which the acceleration due to gravity decreases to 4.9 ms−2, is close to ______.
(Radius of earth = 6.4 × 106 m)
