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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
State whether the following statement is true or false :
The value of G on the moon is about one-sixth `(1/6)`of the value of G on the earth.
Is the acceleration due to gravity of earth ‘g’ a constant ? Discuss.
If the value of g suddenly becomes twice its value, it will become two times more difficult to pull a heavy object along the floor. Why?
The radius of planet A is half the radius of planet B. If the mass of A is MA, what must be the mass of B so that the value of g on B is half that of its value on A?
Why does the velocity of a stone thrown vertically upwards decreases?
The value of g is highest at the equator.
Write scientific reason.
The value of acceleration g is greater at the pole than at the equator.
Write scientific reason.
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 moon has a mass of 1/81 that of the earth and a radius of 1/4 that of the earth. The escape speed from the surface of the earth is 11.2 km/s. The escape speed from the surface of the moon is ______.
