- #1
JessicaJ283782
- 41
- 0
Suppose that the position vector for a particle is given as a function of time by vector r (t) = x(t)i + y(t)j, with x(t) = at + b and y(t) = ct^2 + d, where a = 1.70 m/s, b = 1.05 m, c = 0.126 m/s2, and d = 1.12 m.
So, I evaluated x(t) and y(t) at each time:
x(t): 1.70*2.05+1.05 which equals 1.385
x(t)=1.70*3.80+1.05 which equals 1.696
y(t)=.126(2.05^2)+1.12 which equals 6.41515
y(t)=.126(3.80^2)+1.12 which equals 19.3144
I then subtracted the x coordinates (1.696-1.385)=.2975
and the y coordinated (19.3144-6.41515)=12.89925
I then divided those answers by the change in time
(.2975/1.75) and (12.88925/1.75) to get the x and y coordinates and I got:
.71i + 7.371j and it isn't correct? Please help!
So, I evaluated x(t) and y(t) at each time:
x(t): 1.70*2.05+1.05 which equals 1.385
x(t)=1.70*3.80+1.05 which equals 1.696
y(t)=.126(2.05^2)+1.12 which equals 6.41515
y(t)=.126(3.80^2)+1.12 which equals 19.3144
I then subtracted the x coordinates (1.696-1.385)=.2975
and the y coordinated (19.3144-6.41515)=12.89925
I then divided those answers by the change in time
(.2975/1.75) and (12.88925/1.75) to get the x and y coordinates and I got:
.71i + 7.371j and it isn't correct? Please help!