**Velocity and Displacement**
A particle's initial velocity is given by v0x = -1.0m/s and v0y = 3.0m/s; it's acceleration is ax = 0.50m/s2 and ay = -0.90m/s2. (a) Calculate its velocity 2.0s later. (b) Calculate its displacement at that time.
vx = v0x + axt
∆x = v0xt + 1/2axt2
∆y = v0yt + 1/2ayt2
v = -1.0m/s(x hat) + 3.0m/s(y hat)
a = 0.5m/s2(x hat) - 0.9m/s2(y hat) **Solve for velocity at 2.0s**
vx = v0x + axt
vx = (-1m/s) + (0.5m/s2)(2.0s)
vx = 0m/s
vy = v0y + ayt
vx = (3m/s) + (-0.9m/s2)(2.0s)
vx = 1.2m/s *v = 0m/s(x hat) + 1.2m/s(y hat)* **Calculate displacement.**
∆x = v0xt + 1/2axt2
∆x = (-1m/s)(2.0s) + 1/2(0.5m/s2)(2.0s)2
∆x = -1m
∆y = v0xt + 1/2axt2
∆y = (3m/s)(2.0s) + 1/2(-0.9m/s2)(2.0s)2
∆y = 4.2m *y = -1.0m(x hat) + 4.2m(y hat)* |