At which point on its path a projectile has the smallest speed?

The path of a projectile is

At the highest point of the path of a projectile, its

At the topmost point of its path, a projectile has acceleration of magntiude

Which of the following atom or ions has the smallest size?

Which one of the following has the smallest diameter?

Which of the following atom or ions has the smallest size?

Which of the following has the smallest size ?

Which family of flowering plants has the smallest seeds ?

Assertion :- In projectile motion a particle is projected at some angle from horizontal. At highest point of its path radius of curvature is least. At highest point of path normal acceleration of projectile is equal to acceleration due to gravity.

A projectile of mass 3m explodes at highest point of its path. It breaks into three equalparts. One part retraces its path, the second one comes to rest. The range of the projectile was 100 m if no explosion would have taken place. The distance of the third part from the point of projection when it finally lands on the ground is -