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**1. The problem statement, all variables and given/known data**

A 7.0 kg toy car can move along an x axis; Figure gives Fx of the force acting on the car, which begins at rest at time t=0. The scale on the Fx axis is set by Fxs = 6.0 N. In unit-vector notation, what is p at (a)t = 1.0 s and (b)t = 6.0 s,(c) what is v at t = 9.0 s?

http://edugen.wiley.com/edugen/courses/crs1650/art/qb/qu/c09/q30.jpg

**2. Relevant equations**

p = mv

F = ma

J = Ft

V2 = v1 + at

**3. The attempt at a solution**

I tried solving for V2 using F = ma

f = m(v2-v1/t)

6 = 7 (v2 - 0/1)

then i plugged this value into p = mv but then i realized they want unit vector notation and I got really confused! =S