Question

A model rocket is launched from a level ground at the park. It is launched diagonally with an

initial total velocity of 50 m/s at an angle of 60 degrees above horizontal. That means the
initial velocities for the horizontal and vertical components are as follows:
Vix = 25 m/s -->
Viy = 43.3 m/s upwards
Ignoring air resistance, how much time does it take the rocket to reach its maximum
height?

Answer 1

4.4 s

Step-by-step explanation:

When the rocket reaches the maximum height →
`v_y=0`

Given:

`v_(iy)=43.3\ m/s`

`a = g=-9.8\ m/s^2`

`\boxed{v_y=v_(iy)+at}`

`0=43.3+(-9.8)t`

`9.8t=43.3`

`t=43.3/9.8`

`=4.4\ s`