an error bar shows your uncertainty on a graph. uncertainty is +/-0.5 of a scale devision to which you measured (put very simply) unless your measurements have ben used in calculations to get your points on your graph then you need to add and multiply your errors depending on what function they...
for i) use f=ma you know the force from thrust and the mass of the object so rearrange to give
a=f/m
that will give you your acceleration then substitute that into you motion equations
you have a, u and v. you want to find t
v=u+at
rearrange to give t
you need to work out the potential energy of the ball at the top of the ramp as
"energy can't be created or destroyed only changed from one from to another"
the ball will have all the potential energy as kenetic energy at the bottom, assuming that friction is neglible, since you have not given...
Forces in -> direction
lbs from wind = 120 x 10 @ 13ft (need to take centre of the force which, asuming it is constant over the area will be 5ft from the top.
Forces in <-
lbs from sign
2800lbs @ 1.5ft from pivot
w @ 7ft from pivot
so moments ->
1200 x 13 = 15,600mlbs
so to stop it tiping
7w...
you would need to know the vector forces of which the ball was hit, time of acceleration and then the path would be the negative acceleration due to drag in the x and then acceleation due to gravity in the y assuming you are only lookin at x and y and not considering a cross wind which would...
sorry to get very simple here but surely if Newton had thought differently he would have been wrong lol. therefore we wouldn't have Newtonian physics we would have Johnsonian physics (Dr Johnson is the physit i am saying then came up with wot Newton thought up wrong)
abstract i know
just wanted to say hi first as this is my first post.
I will explain the story...
There is an ongowing debate within the Kitesurfing world regarding the aerodynamics of LEI (leading edge inflateable) kites and Foil (like RAM aim parachutes) kites.
LEI Kites:
They have large inflateable...