Question

A body is thrown with a speed of 30 m/s at angle 30 with horizontal from a horizontal floor. The time

after which it is moving perpendicular to it's initial direction of motion is -

(a) 6 sec (b) 3 sec

(c) 1.5 sec (d) Never​

Answer 1

Answer:

b is correct i think

Explanation:

this is what i get