Advertisements
Advertisements
Question
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 :
Options
u/g
u2/2g
u2/g
u/2g
Solution
u2 / 2g
At the maximum height 'h', the velocity becomes zero.
Using,
v2 = u2 − 2gh
⇒ 0 = u2 − 2gh
⇒ h = u2/(2g)
APPEARS IN
RELATED QUESTIONS
What is the actual shape of the orbit of a planet around the sun? What assumption was made by Newton regarding the shape of an orbit of a planet around the sun of deriving his inverse square rule from Kepler's third law of planetary motion?
The masses of the earth and moon are 6 × 1024 kg and 7.4 × 1022 kg, respectively. The distance between them is 3.8 × 105 km. Calculate the gravitational force of attraction between the two?
Use G = 6.7 × 10–11 N m2 kg–2
Write proper answer in the box:
If `"F" = ("G""m"_1"m"_2)/"d"^2` then F = ______
The atmosphere consisting of a large number of gases is held to the earth by :
The weight of an object at the centre of the earth of radius R is :
The value of quantity G in the formula for gravitational force:
Two particles are placed at some distance from each other. If, keeping the distance between them unchanged, the mass of each of the two particles is doubled, the value of gravitational force between them will become :
Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be
An apple falls from a tree because of gravitational attraction between the earth and the apple. If F1 is the magnitude of the force exerted by the earth on the apple and F2 is the magnitude of the force exerted by the apple on earth, then
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.
