Question

A particle initially located at the origin has an acceleration of a = 2 i+4 j m/s^2 and an initial velocity of v = 6 i - 2 j m/s find :
a- its speed and direction of motion at t=5 s
b- how far is it from the origin at t =5 s

Answer 1

is there supposed to be a \(t\) in your equations?

Answer 2

I do not know

Answer 3

Do you know the three equations of motion?

Answer 4

yes

Answer 5

I solve it (a)
I need how can solve (b)

Answer 6

do you know its position at t = 5 sec?

Answer 7

how can find it ?

Answer 8

u know how to find distance travelled

Answer 9

\[\vec s = \vec u t + \frac{1}{2} \vec a t^2\]