What is the momentum of a 5-kg ball traveling at 9 m/sec? a. 0.55 kg•m/s b. 1.4 kg•m/s c. 14 kg•m/s d. 45 kg. m/s
14/15. Melissa loves ladders. So she climbs onel By the time she gets her 55 kg body to
the top of her 4.5 m ladder, by how much does her potential energy increase?

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.