Advertisements
Advertisements
प्रश्न
An object is thrown vertically upwards with a velocity u, the greatest height h to which it will rise before falling back is given by :
विकल्प
u/g
u2/2g
u2/g
u/2g
उत्तर
u2 / 2g
At the maximum height 'h', the velocity becomes zero.
Using,
v2 = u2 − 2gh
⇒ 0 = u2 − 2gh
⇒ h = u2/(2g)
APPEARS IN
संबंधित प्रश्न
What name has been given to the force with which two objects lying apart attract each other ?
What assumption was made by Newton regarding the shape of an orbit of a planet around the sun for deriving his inverse square rule from Kepler’s third law of planetary motion ?
Write proper answer in the box:
If `"F" = ("G""m"_1"m"_2)/"d"^2` then F = ______
The force of attraction between two unit point masses separated by a unit distance is called :
The gravitational force of attraction between two objects is x. Keeping the masses of the objects unchanged, if the distance between the objects is halved, then the magnitude of gravitational force between them will become :
An apple of mass 100 g falls from a tree because of gravitational attraction between the earth and the apple. If the magnitude of force exerted by the earth on the apple be F1 and the magnitude for force exerted by the apple on the earth be F2, then :
If the distance between two masses is doubled, the gravitational force between them becomes less than the previous force.
A boy is whirling a stone tied with a string in a horizontal circular path. If the string breaks, the stone
The atmosphere is held to the earth by
Give scientific reasons.
Any object on earth falls vertically downward and not at an angle to the vertical; nor fly off in a horizontal direction.
