Home
Class 11
PHYSICS
A stone dropped from a cliff hits the gr...

A stone dropped from a cliff hits the ground in 4 sec. Height of the cliff is

A

39.2 m

B

29.4 m

C

9.8 m

D

78.4 m

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

A stone is dropped from a height h . It hits the ground with a certain momentum P . If the same stone is dropped from a height 100% more thanthe preyiious height, the momentum when it hits the ground will change by

A stone dropped from the top of a tower reaches the ground in 3 s. The height of the tower is

Shots are fired simultaneously from the top and bottom of a vertical cliff with the elevation alpha = 30^@ , beta = 60^@ , respectively. The shots strike an object simultaneously at the same point. If a = 10 (sqrt3) m is the horizontal distance of the object from the cliff, then the height h of the cliff is

A stone is dropped from top of a cliff.It is seen to hit the ground below after 4.2 s. How high is the cliff?

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 boat is being rowed away from a cliff 150 meter high. At the top of the cliff the angle of depression of the boat changes from 60^(@) to 45^(@) in 2 minutes. Find the speed of the boat.

A stone is dropped from the top of a tall cliff and n seconds later another stone is thrown vertically downwards with a velocity u . Then the second stone overtakes the first, below the top of the cliff at a distance given by

A stone drop from height h reaches to earth surface in 1 sec. if the same stone taken to moon and drop freely then it will reaches from the surface of the moon in the time (the 'g' of moon is 1/6 times of earth)-