Recent content by Doonami

a = dv/dt So, from that I should differentiate the equation for v with respect to time. I can just do this for the individual components (i and j) right? This should yield . . . ma = 0.2[ (15t)i - (10t2)j ] multiplied by mass, then sub in t=2.

Homework Statement A 0.2 kg particle moves in the x-y plane under the action of its weight and a force F that varies with time. The velocity of the particle is given by the expression \hat{v} = 7.5(t2 + 3)\hat{i} - (10/3)(t3 - 4)\hat{j} Homework Equations mv1 + \sum\intFdt = mv2...

I considered that as well. However no dimensions are given. The picture provided is almost exactly as it was presented.

Homework Statement A projectile is launched at 10m/s from a sloped surface. The surface is angled 30degrees, and the projectile is launched off from the surface at a 45degrees angle relative to the horizon. Find the distance from the launching point where the projectile lands. How long does...

Good old complex analysis. I'm trying to evaluate a line integral which looks like this \ointe (z + [1/z]) for |z| = 1 So I guess I'm dealing with a circle with a radius 1, so I've parameterised: z = eit I need to sub this into my formula of: \intc f(z)dz = \intf(z(t)) z'(t)dt (this is...