Projectile Motion (1 Viewer)

[cutemouse]

Hello,

For projectile motion in 3U, do I have to derive EVERY SINGLE thing?

It's so stupid, some stuff are so obvious and stupid.

Like, do I have to state that the acceleration in the horizontal component is zero then integrate it, because I can see what the bloody integral/answer will always be.

I understand for the vertical component it's a good idea to state everything, so no complaints there.

Also, do I always have to draw the the triads for the initial velocity diagram? I know that it'll always be x=Vcostheta and y=Vsintheta...?

Thanks

 

[EvoRevolution]

will before yesterday i would remember the equations without knowin how to get them. But i find it is easier just to start from x'' = o and y'' = g and then work my way down.

plus now i only have to remember 2 rather than 6