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Why does the velocity of a stone thrown vertically upwards decreases? - Physics

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प्रश्न

Why does the velocity of a stone thrown vertically upwards decreases?

एक पंक्ति में उत्तर

उत्तर

Velocity of a stone thrown vertically upwards decrease because acceleration due to gravity is acting on downward direction.

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अध्याय 2: Motion in One Dimension - Exercise 3 [पृष्ठ ८३]

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फ्रैंक Physics [English] Class 9 ICSE
अध्याय 2 Motion in One Dimension
Exercise 3 | Q 19 | पृष्ठ ८३

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.


The value of g is highest at the equator.


As we go above the earth's surface, value of g increases.


Write scientific reason.

The value of gravitational acceleration (g) decreases as we go above the Earth's surface.


Write scientific reason.

The value of g at the centre of the earth is zero.


______ is used to change the speed of the car.


The ratio of masses of two planets is 2:3 and the ratio of their radii is 4:7 Find the ratio of their accelerations due to gravity.


The depth 'd' below the surface of the earth at which acceleration due to gravity becomes `(g/n)` is ______.

R = radius of the earth, 'g' = acceleration due to gravity, n = integer


The radius of the earth is. 6400 km and that of mars is 3200 km. The mass of the earth is about 10 times the mass of mars. Weight of the object on the earth is 200 N. What will be its weight on the mars?


A wire AB is carrying steady current 'I1' and is kept on the table. Another wire CD carrying current 'I2' is held parallel and directly above AB at a distance 'r'. When wire CD is left free and it remains suspended at its position, its mass per unit length is (g =acceleration due to gravity) ____________.


In the relation F = `"G M" "m"//"d"^2`, the quantity G


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 ______.


A mass attached to one end of a string crosses top-most point on a vertical circle with critical speed. Its centripetal acceleration when string becomes horizontal will be ______. (g = gravitational acceleration)


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)


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 ______.


A uniform ring of mass M and radius r is placed directly above a uniform sphere of mass 8M and of same radius R. The centre of the ring is at a distance of d = `sqrt3​`R from the centre of the sphere. The gravitational attraction between the sphere and the ring is ______.


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 ______.


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