- #1

PhysicsStudent1

- 6

- 0

## Homework Statement

A 590 kg rocket is at rest on the launch pad. What upward thrust force is needed to accelerate the rocket uniformly to an upward speed of 28 m/s in 3.3 s?

## Homework Equations

V = Vi + at

F = ma

## The Attempt at a Solution

I'm just confused about what "thrust force" actually means. Is this the same as normal force? When I solve for a using the first equation, a = 8.485.

Using the next equation, I get that F = 5006 N. Is this the upward force? Or do I need to solve for gravitational force (F=mg=5782) and then add 5006 to 5782 and get a total of 10,788 N?

If you could please clarify this for me that would be great! Thanks!