Question

Two projectiles A and B proiected from ground with
same speed at angles39° and 54° above the
horizontal respectively. Their ranges Ra and Rb, are
related as
(1) Ra=Rb
(2) Ra>Rb
(3)Ra<Rb
(4) RA = 0.5 RB
ontana​

Answer 1

Answer:

Ra<Rb

Explanation:

Ra = u^2Sin2(39)/g

Rb = u^2Sin2(54)/g

Ra/Rb

=u^2Sin78/g

---------------------

u^2Sin108/g

Sin78

=----------

Sin108

0.5

------

0.9

Therefore Ra<Rb