If ř (t) = t^3i - 2tj + (t^2-2t)k Define velocity and acceleration. If the velocity vector is given on (x, y) plane at time t, define v(t) and a(t) at time t.

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.