Question

Answer the above THE BEST WILL GET BRAINLIEST
Note: if you randomly wrote anything you will be reported
PS: You will not get the answer in google so don't waste your time!!​

Answer 1

Answer: take the horizontal component of velocity in each case and equal them both

in case 1 its speed is u making θ with the horizontal so

horizontal component = u.cosθ

in case 2 it makes α with horizontal lets consider its speed to be v

horizontal component = v.cosα

since the velocity of horizontal component is constant

u.cosθ= v.cosα

i.e v= u.cosθ/cosα

so your option is 4.