A projectile is thrown into space so as to have a maximum possible horizontal range of 400 metres. T

English

Gujarati

Hindi

3-2.Motion in Plane

medium

A projectile is thrown into space so as to have a maximum possible horizontal range of $400$ metres. Taking the point of projection as the origin, the co-ordinates of the point where the velocity of the projectile is minimum are

A

$(400,100)$

B

$(200,100)$

C

$(400,200)$

D

$(200,200)$

Solution

(b)

$R _{\max }=400 \,m$

The velocity is minimum at the highest point

$\Rightarrow H \rightarrow \frac{R}{2}$

$R=4 H$

$400=4 \times H$

$H=100 \,m$

Standard 11

Physics

Share

Similar Questions

Two objects are projected with same velocity ' $u$ ' however at different angles $\alpha$ and $\beta$ with the horizontal. If $\alpha+\beta=90^{\circ}$, the ratio of horizontal range of the first object to the $2^{\text {nd }}$ object will be :

medium

(JEE MAIN-2023)

A ball is projected vertically upwards with a certain initial speed. Another ball of the same mass is projected with the same speed at an angle of $30^o$ with the horizontal. At the highest point, the ratio of their potential energies is

medium

Three identical balls are projected with the same speed at angle $30^o, 45^o$ and $60^o$. Their ranges are $R_1 R_2$ and $R_3$ respectively. Then

medium

A water fountain on the ground sprinkles water all around it. If the speed of water coming out of the fountain is $v$, the total area around the fountain that gets wet is :

medium

(AIEEE-2011)

Which of the following is not a projectile?

easy