Stone A is dropped but stone B and C are projected horizontally `(u_(C)gtu_(B))` from top of tower of height h. then find out (i) Which stone will rea

Monjur Alahi

Stone A is dropped but stone B and C are projected horizontally `(u_(C)gtu_(B))` from top of tower of height h. then find out
(i) Which stone will reach the ground earlier
(ii) Relation between vertical velocity of stones when they hit the ground.


0 like 0 dislike
3 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - (i) All stones will teach the ground at the same instant `t=sqrt((2h)/(g))`
(ii) same for all `v_(y)=sqrt(2gh)`

0 like 0 dislike
3 views
Talk Doctor Online in Bissoy App
The angle of depression of the top of the tower from the top of a building is `30^(@)` and angle of elevation of the top of the tower from the bottom

Correct Answer - `(20(1+sqrt3))/(sqrt3)m`

2 Answers 1 views
A body is dropped from the top of a tower and it covers a 80 m distance in last two seconds of its journey. Find out `[g=10 ms^(-2)]` (i) height of th

Correct Answer - (i) 125 m (ii) 5 sec (iii) `50 m//s`

2 Answers 3 views
A particle when projected vertically upwards from the ground, takes time T to reach maximum height H. Find out (i) The height of the particle from gro

Correct Answer - (i) `3H//4,8H//9,8H//9,15H//16, 1:3,1:8,1:8,1:15` (ii) 1 : 7

2 Answers 3 views
An aeroplane is flyind horizontally at a height of 2 km and with a velocity of 720 km/h. A bag containing ration is to be dropped to the Jawans on the

Correct Answer - (i) 4 km (ii) 20 sec (iii)`200sqrt(2)m//s` (iv)`45^(@)` (v) straight line (vi) parabolic (vii) Just vertical upwards to Jawans at 2 km height

2 Answers 1 views
A tower stands vertically on the ground. From a point on the ground, 20m away from the foot of the tower, the angle of elevation of the top of the tow

Correct Answer - `34.64 m`

2 Answers 1 views
On a horizontal plane there is a vertical tower with a flag pole on the top of the tower. At a point 9 metres away from the foot of the tower the angl

Correct Answer - `5.19 m, 10.38 m`

2 Answers 1 views
A straight highway leads to the foot of a tower. A man standing at the top of the tower observes a car at an angle of depression of `30o` , which is a

Correct Answer - `3` seconds

2 Answers 1 views
From the top of a vertical tower, the angles of depression of two cars, in the same straight line with the base of the tower, at an instant are found

Correct Answer - `136.6 m`

2 Answers 1 views
A man observes a car from the top of a tower, which is moving towards the tower with a uniform speed. If the angle of depression of the car change fro

Correct Answer - `473.2 m`

2 Answers 1 views
If a body is projected horizontally from the top of a tower the time taken by it to reach the ground depends upon 

B) height of the tower

2 Answers 1 views
X