physics work help.

[opal girder]

could someone check if i did this right or if my solving form is correct please

[opal girder]

may the helper @ me when they arrive? thank you helper.

[oblique quarry]

Everything checks out for me

[tiny panther]

The 3rd one is a bit wrong, which can be corrected by using right formula v²-u²=2aS_3, although I did check the formula u used in s_3, which is correct, but if answer is matching by yr way I'm wrong to suggest v²-u²=2as_3.

[oblique quarry]

0^2-20^2 = 2*-2*s3

-400 = -4s3

s3 = 100

[oblique quarry]

what part is wrong in that?

[opal girder]

i’m confused

[opal girder]

it’s correct no? or am i in the wrong

[oblique quarry]

i mean it looks all correct to me

and i used the same formula the other guy did when verifying

[brisk bobcat]

It is correct
Js keep jn mind that deceleration is positive itself and acceleration can be negative or positive
So when u wrute deceleration,a=-2m/s²
That looks wrong
Either u need to write deceleration =2m/s²
Or acceleration =-2m/s²

[opal girder]

would it be 220

[opal girder]

oh

okay okay

[brisk bobcat]

60+50+100=210

[opal girder]

oh okay okay

well thanks a lot guys

i’ll submit the work

[brisk bobcat]

Yes and also try using
Ut-(1/2)at² usually, since rhis gives accurate
In some cases ((u+v)/2)t doesnt give u the correct answer

[oblique quarry]

i think thats when acceleration is not constant

but in this case it is so its fine ig

[opal girder]

ohhh okay well thanks a lot to all of you

you’re all a big help

[oblique quarry]

np

[opal girder]

.close

[jaunty plume]

Solved

Post marked as solved by @opal girder.

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