you do you use v = u+at, and then you equate i = -j values from the equation to work out that time is 20. Then you substitute back into equation to get v = i -j and then to find speed you do root(1^2 + 1^2) which gives you root2 or 1.41
can someone remember question 6? like values or exact question, I jsut want to make sure I got c) right, because I forgot what i wrote for it. Would appreciate if someone would upload the question paper.
you do you use v = u+at, and then you equate i = -j values from the equation to work out that time is 20. Then you substitute back into equation to get v = i -j and then to find speed you do root(1^2 + 1^2) which gives you root2 or 1.41
I think there was a question before it where you used v=u+at to find a time when its travelling east of the origin. I used s=ut+1/2at^2 for the last one though, i may be wrong gah. i thought it was an ok paper overall.
I think there was a question before it where you used v=u+at to find a time when its travelling east of the origin. I used s=ut+1/2at^2 for the last one though, i may be wrong gah. i thought it was an ok paper overall.
Last one asked you to find Speed. To find speed you find v, and then square root i and j component and root it. The first part asked for s though. and more precisely it is r, not s but w/e.