Recent content by Lank

Thanks.

Homework Statement Having trouble recognizing this notation. Let Ai = {i, i + 1, i + 2, . . . } for i = 1, 2, . . . . What are: ∞ \bigcup A (subscript i) i=1 and ∞ \bigcap A (subscript i) i=1 Homework Equations I know what the \bigcup or \bigcap notation means in sets and subsets, but...

Of course it would. You're the man BishopUser. Thanks dude.

Homework Statement Stevie stands on a rolling platform designed for moving heavy objects. The platform has mass of 76 kg and is on a flat floor, supported by rolling wheels that can be considered to be frictionless. Stevie's mass is 43 kg. The platform and Stevie are stationary when she...

Thanks, I made a wrong assumption at the start, Final V = 0 was too good to be true. I just set both motion equations for each object equal to each other and solved.

Homework Statement Speedy Sue, driving at 30.0m/s, enters a one-lane tunnel. She then observes a slow-moving van 155m ahead traveling at 5.00m/s. Sue applies her brakes but can only accelerate at -2.00m/s^2 because the road is wet. Will there be a collision? State how you decide. If yes...