Question

Time taken by projectile to reach from a to b is t then the distance ab is equal to

Answer 1

Answer:

Explanation:

But the time taken to fall from the highest point to the ground = time taken to ascend to the highest point. Therefore, the time of flight= 2× time taken to reach the highest point =2 × (u Sin ß/ g) = 2 u Sin ß/g .

Answer 2

Answer:

Explanation:

Horizontal component of u is ucos60ucos⁡60

=u2=u2

AC=u2AC=u2t=ut2t=ut2

AB=ACsec30AB=ACsec⁡30

=ut223–√=ut223

=ut3–√=ut3

Hence it is the correct answer.

hope find helpful