Chapter 7
7.2 If a Saturn V rocket with an Apollo spacecraft attached has a combined mass of m =
2.9x105 kg and is to reach a speed of v = 11.2 km/s = 11.2 x103 m/s, how much Kinetic Energy
will it have
K=
1 2
mv = 1.82 101 3 J
2
7.3 On August 10, 1972, a

Chapter 8
8.2 In Fig. 8-27, a single frictionless roller-coaster car of mass m=825 kg tops the first hill with a
speed of v0 = 17.0 m / s at a height h = 42.0m . How much work does the gravitational force on
the car from that point to (a) point A, (b) poi

Chapter 10
10.10 Starting from rest, a disk rotates about its central axis with constant angular acceleration.
In 5.0 s, it rotates 25 rad. During that time, what are the magnitudes of (a) the angular
acceleration and (b) the average angular velocity? (c)

Chapter 11
11.7 A solid cylinder of radius 10cm and mass 12kg starts from rest and rolls without slipping a
distance of 6m down a house roof that is inclined at 30 degrees (a) What is the angular speed of
the cylinder about its center as it leaves the hou