Homework Statement
A disk is initially at rest. A penny is placed on it at a distance of 1.4 m from the rotation axis. At time t=0s, the disk begins to rotate with a constant angular acceleration of 1.9 rad/s^2 around a fixed, vertical axis through it's center and perpendicular to it's plane...
Homework Statement
Which of these situations describes you observing from an inertial reference frame?
a. you are in the car of a train, seated at a table, and the train suddenly slows down
b. you are in the car of a train, going north, and the train goes around a curve to go west
c. you are in...
Homework Statement
"A bird flew 40 m to the west, then 100 m in a direction 36.9 degrees to the north of east. Use the algebraic addition of vectors to fins the magnitude of the bird's net displacement"
Use sin (36.9) =0.6 and cos (36.9) = 0.8
Homework Equations
Vector addition?
A =...