A ball is projected from ground in such a way that after 10 seconds of projection it lands on ground 500 m away from the point of projection. Find out

Monjur Alahi

A ball is projected from ground in such a way that after 10 seconds of projection it lands on ground 500 m away from the point of projection. Find out :-
(i) angle of projection
(ii) velocity of projection
(iii) Velocity of ball after 5 seconds


0 like 0 dislike
7 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - (i)`theta=45^(@)`
(ii)`50sqrt(2)m//s`
(iii)`50m//sec`

0 like 0 dislike
7 views
Talk Doctor Online in Bissoy App
A positive charge of `20 mu C` is placed 2 m away from a negative charge of `20 mu C`. Determine the electric field at a point 2 m away from each char

Correct Answer - `4.5 xx 10^(4) NC^(-1)`

2 Answers 2 views
A body is projected with a velocity of 40 ms^-1. After 2 s it crosses a vertical pole of height 20.4 m. Find the angle of projection and horizontal

Given: u = 40 ms-1, t = 2 s, y = 20.4 m, ay = -9.8 m/s2 To find:  (i) Angle of projection (θ) (ii) Horizontal range of projectile (R) Formulae: (i) y = uy t + \(\frac{1}{2}\) ay t2 (ii) R = \(\frac{u^2\,sin\,2\theta}{g}\) Calculation:...

2 Answers 1 views
A man standing between 2 parallel eliffs fires a gun. He hearns two echos one after 3 seconds and other after 5 seconds.

distance (s) = 1360 m,  time for first echo = 3 s,  time for second echo = 5 s  To Find : speed of sound (v) Formula : speed = distance/time Calculation : Time for first...

2 Answers 4 views
The height (in meters) at any time t (in seconds) of a ball thrown vertically varies according to equation `h(t)=-16t^(2)+256t`. How long after in sec

Correct Answer - `8 sec`

2 Answers 4 views
A particle is projected vertically upwards from the earth. It crosses the same point at t=2 sec and t=8 sec. Find out `[g=10 ms^(-2)]` (i) the time fo

Correct Answer - (i) 10 sec (ii) 50 m//s (iii) 125 m (iv) 80 m

2 Answers 2 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
A ball is projected in a manner such that its horizontal gange is n times of the maximum height. Then find out the ratio of potential energy to kineti

Correct Answer - `(16)/(n^(2))`

2 Answers 3 views
(i) Find the projection of `vec(a)` on `vec(b)` if `vec(a).vec(b)=8` and `vec(b)=(2hat(i)+6hat(j)+3hat(k))`. (ii) Write the projection of the vector `

Correct Answer - (i) `8/7` (ii) 0

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
A ladder is placd in such a way that its foot is a distance of 15 m from a wall and its top reaches a window 20m abvoe the ground. Find the leng of th

Correct Answer - 25 m

2 Answers 1 views
X