Vector A with arrow has a magnitude of 41 units and points in the positive y direction. When vector B with arrow is added to A with arrow, the resultant vector A with arrow + B with arrow points in the negative y direction with a magnitude of 11 units. Find the magnitude and direction of B with arrow.

In raising a 6200-n piano with a pulley system, the movers note that, for every 2.2 m of rope pulled down, the piano rises 0.12 m . ideally, find the force required to lift the piano.

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?