random paper 1 stuff

Question 1

what does coplanar mean

Answer 1

lie in the same plan (e.g 2d not 3d)

Question 2

what does couple mean

Answer 2

pair of equal parallel forces that are opposite in direction.

(these forces dont have to be acting exactly against each other.
an example is the 2 forces you creat when turning a tap valve)

Question 3

what does translational motion mean

Answer 3

motion in a straight line

Question 4

what is rational motion

Answer 4

a type of motion associated with objects that travel in a circular path

Question 5

what is 2.060898 to 2 s.f

Answer 5

2.0 as 0 can be a significant figure when inbertween other significant figures

Question 6

when there are 3 marks what do you do

Answer 6

give 3 points of something

there just has to be 3 points e.g says to make a conclusion on spomething aand gives 3 marks. this means there is 1 for correct conclusion 1 for 1 point and 1 for another point.

Question 7

instead of saying gravitational force say _____ or _______ _____ __ ____

Answer 7

weight or gravitational pull of earth