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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
What is the value of gravitational constant G (i) on the earth, and (ii) on the moon ?
An object takes 5 s to reach the ground from a height of 5 m on a planet. What is the value of g on the planet?
Right or wrong sentence:
The CGS unit of G is dyne.cm2/g2.
Write scientific reasons.
The value of acceleration g is greater at the pole than at the equator.
The mass of the moon is `1/81` of the mass of the earth. Its diameter is `1/3.7` of that of the earth. If acceleration due to gravity on the surface of the earth is 9.8 m/s2, then the acceleration due to gravity on the surface of the moon.
The force of attraction between two unit point masses separated by a unit distance is called
The acceleration due to gravity on the earth of radius Re is ge, and that on moon of radius Rm, is gm. The ratio of the masses of the earth and moon is given by ______.
If the change in the value of g at the height h above the surface of the earth is the same as at a depth x below it, then ______.
(both x and h being much smaller than the radius of the earth)
The mass of a spaceship is 1000 kg. It is to be launched from the earth's surface out into free space. The value of g and R are 10 m/s2 and 6400 km, respectively. The required energy for this work will be ______.
A monkey of mass 50 kg climbs on a rope which can withstand the tension (T) of 350 N. If monkey initially climbs down with an acceleration of 4 m/s2 and then climbs up with an acceleration of 5m/s2. Choose the correct option (g = 10 m/s2).
