Assignment

What is the path followed by a moving body, on which a constant force acts in a direction other than initial velocity (i.e. excluding parallel and antiparallel direction) ?

Two stones are thrown with same speed $u$ at different angles from ground in air. If both stones have same range and height attained by them are $h_1$ and $h_2$, then $h_1+h_2$ is equal to

A ball is thrown at an angle $\theta$ with the horizontal, its horizontal range is equal to its maximum height, This is possible only when the value of $\tan \theta$ is

A ball is projected from a point $O$ as shown in figure. It will strike the ground after $\left(g=10 \mathrm{m} {\mathrm{s}}^{-2}\right)$

A particle is thrown with a velocity of $u \mathrm{m} {\mathrm{s}}^{-1}.$ It passes $A$ and $B$ as shown in figure at time $t_1=1 \mathrm{s}$ and $t_2=3 \mathrm{s}.$ The value of $u$ is $\left(g=10 \mathrm{m} {\mathrm{s}}^{-2}\right)$

A projectile is thrown with speed $40{ \mathrm{m} \mathrm{s}}^{-1}$ at angle $\theta$ from horizontal. It is found that projectile is at same height at $1 \mathrm{s}$ and $3 \mathrm{s}.$ What is the angle of projection ?

In the given figure for a projectile,

An object is projected from ground with speed $u$ at angle $\theta$ with horizontal. the radius of curvature of its trajectory at maximum height from ground is