Question

if a projectile is thrown with a velocity of 19.6m/sec making an angle of 30° with x-axis,
the projectile remains in air for
a. 1 sec
b. 2 sec c. 3 sec
d. 4 sec
e. NOT
answer is B
I need solution​

Answer 1

Answer:

hey buddy :-

the time of flight =

$t = 2u \sin(30 ) \div g$

therefore . (2×19.6)/9.8×2

=2 sec. (ans)

hope it helps..