Consider the video you just watched. suppose we replace the original launcher with one that fires the ball upward at twice the speed. we make no other changes. how far behind the cart will the ball land

As we know that range of the projectile motion is defined as

now we know that

horizontal speed =

also in order to find the time of motion we will have

now from the above formula of range we know that

now from above formula we can say that if speed of the ball is twice that of initial speed then the range will increased by 4 times

object 2 because all the other ones are wrong