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## Homework Statement

A particle initially located at the origin has an acceleration of vector a = 5.00j m/s2 and an initial velocity of vector v i = 8.00i m/s.

a)Find the vector position at any time t (where t is measured in seconds). (Use the following as necessary: t.)

Find the vector velocity at any time t.

b)Find the coordinates of the particle at t = 2.00 s.

x=....m

y=....m

Find the speed of the particle at this time.

## Homework Equations

Not quite sure. Tried rf=ri+Vit+1/2at^2

Vf=Vi+at

## The Attempt at a Solution

For a) I plugged what i thought was right into the first equation above with ri=0i+0j because it is at the origin(see question) but the answer (8.00it+2.50jt^2) was wrong