projectiles

[stray forum]

and please god forbid someone sends me a photo of their working and say 'hope it helps' 💀💀

[maiden ice]

which part?

[gaunt wyvern]

Hint: use suvat

[maiden ice]

oh part c

[violet oxide]

Really helpful wow

[gaunt wyvern]

It's kinda hard to show what exactly you need to do without just saying the answer

[violet oxide]

Displacement is -36m assuming you take up as positive

Initial velocity is 40sintheta

And you should have calculated the time by knowing the distance OR

calculate final velocity

Then use Pythagoras

[violet oxide]

Kinda

[stray forum]

that's not cute

but thanks

[maiden ice]

why do you use pythag?

[violet oxide]

because youve split the speed into horizontal and vertical components to use suvat

horizontal remains constant provided a = 0

then find the final vertical velocity

root (final velocity)^2 + (horizontal velocity)^2

[maiden ice]

ohhh i see

how would i know when to use it though

[violet oxide]

'find the speed of the particle at ....'

[maiden ice]

oh right i see now