Question

What is the height of the platform?

Answer 1

It's 40 ft.

Since the rocket is launched from a platform, then the height of the rocket at 0 seconds will be the height of the platform.

`h(t)=-16t^(2)+70t+40\\h(t)=-16(0)^(2)+70(0)+40\\h(t)=0+0+40=40ft`

Answer 2

40 metres.. Hope this helps u