Quick question on acceleration of a rocket (1 Viewer)

[independantz]

The formula for the acceleration of a rocket is T-mg/m

How come when calculating the acceleration the g isn't taken as negative? because isnt it by convention, that gravitational acceleration is taken as negative when being opposed.

 

[kooltrainer]

here, mg is the formula for weight.. so u jus wana find the weight minus from thrust (which determines the force).. if u take -g .. the weight would be negative..

 

[independantz]

Ahh i see, thanks.

 

[Mark576]

Yeah the weight force and the acceleration due to gravity are acting in the same direction so it's much easier to assign downwards as positive, and attain a positive answer as a result.

 

[Steth0scope]

Yeah the weight force and the acceleration due to gravity are acting in the same direction so it's much easier to assign downwards as positive, and attain a positive answer as a result.

Looks like you will be getting a band 6 quite easily in physics lol.

Good luck everyone with the HSC physics course. You should enjoy it. It was awesome in my opinion.