Question

A projectile is fired from point A at an
angle above the horizontal. At its highest point, after having traveled a horizontal
distance D from its launch point, it suddenly explodes into two
identical fragments that travel horizontally with equal but oppo-
site velocities as measured relative to the projectile just before it
exploded. If one fragment lands back at point A, how far from A (in
terms of D) does the other fragment land?
​

Answer 1

Explanation:

$Helo$For higher plants, flowers are chiefly used as a basis

of classification, because :-

(1) These show a great variety in colour

(2) It can be preserved easily

(3) Reproductive parts are more conservative than

vegetative parts

(4) None of these

21. Who wrote species plantarum :-

(1) Linnaeus

(2) Mayr

(3) Bentham

(4) Aristotle

22. The binomial system of nomenclature was initially

given by :-

(1) Magnus

(2) Linnaeus

(3) Caesalpinno

(4) Discorides

23. Who is regarded as "Darwin of 20th century"

(1) John Ray

(2) Lamarck

(3) Ernst Mayr

(4) Darwin

24. A division is formed by combining several :-

(1) Orders

(2) Families

(3) Classes

(4) Tribes

25. For declaration of new species of higher plants what

characters are mainly used :-

(1) Floral character of new species

(2) Anatomical characters of new species

(3) Physiological character of new species

(4) Character of endosperm

Answer 2

❥Question :-

A projectile is fired from point A at an  angle above the horizontal. At its highest point, after having traveled a horizontal  distance D from its launch point, it suddenly explodes into two  identical fragments that travel horizontally with equal but oppo-  site velocities as measured relative to the projectile just before it  exploded. If one fragment lands back at point A, how far from A (in  terms of D) does the other fragment land?

❥ Answer :-  ​

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