A solid wood door, 90.0 cm wide by 2.00 m tall has a mass of 35.0 kg. It is open and at rest
A small 500-g ball is thrown perpendicular to the door with a speed of 20.0 m/s and hits the door 60.0 cm from the hinged side. The ball rebounds with a speed of 16.0 m/s along the same line. What is the angular speed of the door just after the collision with the ball?
A) 0.127 rad/s
B) 0.925 rad/s
C) 1.14 rad/s
D) 2.28 rad/s
E) 4.57 rad/s
C
You might also like to view...
Which arrow best indicates the direction of the electric field at point P created by the charge distribution on the sphere’s surface?
A. A B. B C. C D. D E. Zero F. AA G. BB H. CC I. DD
The formula for nickel(II) nitrate would be ______________
Fill in the blank(s) with correct word
Identify a true statement about the atoms in the Universe
A) Most of the iron in your body was produced by nuclear fission reactions. B) Most of the calcium atoms in your bones were assembled inside stars. C) The iodine atoms were not formed during the violent deaths of rare massive stars. D) The gold and silver atoms are more than 10 billion years old.
According to current models of solar system formation, why did Uranus and Neptune end up to be much less massive than Jupiter and Saturn?
A) Particles in the solar nebula were more spread out at greater distances, so that accretion took longer and there was less time to pull in gas before the solar wind cleared the nebula. B) Ices were able to condense at the distance of Jupiter and Saturn, but only rock and metal could condense at the distances of Uranus and Neptune. C) The solar nebula had different chemical composition at different distances from the Sun, leading to the differences in mass. D) The size differences are thought to be a random coincidence.