Home
Class 12
PHYSICS
A stone is dropeed from a height of10 cm...

A stone is dropeed from a height of10 cm above the top of a window 80 cm high. The time taken by the stone to cross the window is `(g = 9.8 ms^(-2))`

A

`(1)/(7)s`

B

`(3)/(7)s`

C

`(2)/(7)s`

D

`(4)/(7)s`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

A balloon rises from rest on the ground with constant acceleration g / 8. A stone is dropped from the balloon when the balloon has risen to a height of (H). Find the time taken by the stone to reach the ground.

From the top of a cliff of height 19.6m a ball is projected horizontally. Find the time taken by the ball to reach the ground (g =9.8 ms^(-2)) .

A stone is dropped from the top of a tower of height 125 m. The distance travelled by it during last second of its fall is (g=10 ms^(-2))

A hiker stands on the edge of a cliff 490 m above the ground and throwns a stone horiozontally with an initial speed of 15ms^(-1) neglecting air resistance.The time taken by the stone to reach the ground in seconds is (g=9.8ms^(2))

A body is droped from a height 122.5 m. If its stopped after 3 seconds and again released the further time of descent is (g=9.8 "m/s"^2)

A stone at rest is dropped from a height and falls freely under gravity. Calculate the distance covered by it in the first two seconds. (g = 9.8 m s^(-2) )

How long will a stone take to fall to the ground from the top of a building 80 m high and What will be the velocity of the stone on reaching the ground? (Take g=10 "m s"^(-2) )

A stone"is projected from the ground with a velocity of 14 ms^(-1) one second later it clears a wall 2m high. The angle of projection is (g = 10ms^(-2) )

A stone is dropped from the top of a tower. If it hits the ground after 10 seconds, what is the height of the tower?

A stone is allowed to fall from the top of a tower 300 m height and at the same time another stone is projected vertically up from the ground with a velocity 100 ms^(-1) . Find when and where the two stones meet ?