A projectile is moving at `60 m//s` at its highest point, where it breaks into two equal parts due to an internal explosion. One part moves vertically up at `50m//s` with respect to the ground. The other part will move at

A projectile is moving at 20ms^(-1) at its highest point, where it breaks into equal parts due to an internal explosion. One part moves vertically up at 30ms^(-1) with respect to the gound. Then the other part will move it

A projectile is moving at 20 m s^(-1) at its highest point where it breaks into equal parts due to an internal explosion. Just after explosion, one part moves vertically up at 30 ms^(-1) with respect to the ground. Then the other part will move at :

A projectile is moving at 20 m s^(-1) at its highest point where it breaks into equal parts due to an internal explosion. Just after explosion, one part moves vertically up at 30 ms^(-1) with respect to the ground. Then the other part will move at :

A cannon shell is fired to hit a target at a horizontal distance R. However, it breaks into two equal parts at its highest point. One part (A) returns to the cannon. The other part:

A cannon shell is fired to hit a target at a horizontal distance R. However, it breaks into two equal parts at its highest point. One part (A) returns to the cannon. The other part is: