Question

i have trouble getting the right answer and i don't really understand how to do the questions T_T

Answer 1

@random231 @thushananth01

Answer 2

i tried motion formulas and normal acceleration formula but none are giving me 1.3

Answer 3

then how do i do it??

Answer 4

mm? what is it?

Answer 5

i wanna talk abt first question

Answer 6

hmmmm x_x im sorry i'll not understand unless i see @random231

Answer 7

@shamim it's fine do it please :3

Answer 8

anyway i saw ur second question

Answer 9

yeah so how is it? @shamim @random231

Answer 10

i wanna talk abt second question first

Answer 11

u hv to draw a tangent at t=3

Answer 12

okay cool u both are in same question so what do u guys think i should do?

Answer 13

sorry

Answer 14

talk with him

Answer 15

emm ?_? i did draw it but what do i do next? @shamim why apologizing??

Answer 16

slope of ur tangent is called acceleration at time t=3

Answer 17

slope means tan theta

Answer 18

please any of u, if guys know how am i supposed to do it then say it, it's good to cross check so i'll get to understand it better @random231 @shamim plaaase?

Answer 19

umm tan theta??

Answer 20

?_? it's going on the top of my head

Answer 21

I have no idea what's going on here ?_?

Answer 22

@Mashy

Answer 23

Pleaseeeeeeee help us!!!!

Answer 24

@Mashy save meeeee T_T

Answer 25

which one? first one or second?

Answer 26

Question Number 8

Answer 27

but we need help in both though TT_TT

Answer 28

Acceleration = slope of tangent in VT graph!.. so draw tangent at the required time (3 s) and evaluate the slope of it!

in the Vectors.. if angle theta is increased, it gets closer to Y axis and away from X axis.. so which direction starts getting more and more effect of that vector? (effect of a vector in a direction = component of the vector)

Answer 29

Oooooooh!!!! I got the answer for the tangent!!!

Answer 30

wait for the vector thing do we take random numbers and do the sin theta and the cos theta thing to check it out which one is decreasing and which one is increasing???

Answer 31

U can do that.. but u can just think conceptually!!

imagine a toy kept on the ground.. and u are pulling it..

if u pull is horizontally .. then it ll have max effect and the toy will get pulled easily

so it has max effect in x direction (horizontal) and no effect in y direction

but imagine u start pulling with angle .. now it has a lil effect in y.. and its effect in x has decreased.. right??

and imagine u pull vertically up
.. it has zero effect in x direction now.. correct? all effect in y direction (the toy will be lifted up)