Question

Find the height of the projectile 4 seconds after it is launched.​

Answer 1

Answer:

the height is defined and effected by gravity

Answer 2

Answer:

= 4u cos∅

Step-by-step explanation:

To find the height of the body after the lanch of 4 seconds.

So, height means the total vertical distance travelled in 4 second.

Let the vertical distance be " Y ".

And we know that ,

               distance = speed × time.     ....... ( 1 )

According to the standered formula ,

  u cos∅ = verical velocity ( speed)

So, by using equation (1)

  Y = u cos∅ × 4

     = 4u cos∅