College Physics

Figure 7.38Hydroelectric facility (credit: Denis Belevich, Wikimedia Commons) 17.(a) How much gravitational potential energy (re ...

Figure 7.41Crab Nebula (credit: ESO, via Wikimedia Commons) 31.Suppose a star 1000 times brighter than our Sun (that is, emittin ...

48.Energy that is not utilized for work or heat transfer is converted to the chemical energy of body fat containing about 39 kJ/ ...

Figure 7.46Forces involved in doing push-ups. The woman’s weight acts as a force exerted downward on her center of gravity (CG). ...

8 LINEAR MOMENTUM AND COLLISIONS Figure 8.1Each rugby player has great momentum, which will affect the outcome of their collisio ...

8 Linear Momentum and Collisions We use the term momentum in various ways in everyday language, and most of these ways are consi ...

Newton’s Second Law of Motion in Terms of Momentum The net external force equals the change in momentum of a system divided by t ...

where we have retained only two significant figures in the final step. Discussion This quantity was the average force exerted by ...

Letube the speed of each ball before and after collision with the wall, andmthe mass of each ball. Choose thex-axis andy-axis as ...

8.3 Conservation of Momentum Momentum is an important quantity because it is conserved. Yet it was not conserved in the examples ...

wherep′ 1 andp′ 2 are the momenta of cars 1 and 2 after the collision. (We often use primes to denote the final state.) This res ...

Making Connections: Take-Home Investigation—Drop of Tennis Ball and a Basketball Hold a tennis ball side by side and in contact ...

8.4 Elastic Collisions in One Dimension Let us consider various types of two-object collisions. These collisions are the easiest ...

Strategy and Concept First, visualize what the initial conditions mean—a small object strikes a larger object that is initially ...

Figure 8.7 Collision Lab (http://cnx.org/content/m42163/1.3/collision-lab_en.jar) 8.5 Inelastic Collisions in One Dimension We h ...

Figure 8.9An ice hockey goalie catches a hockey puck and recoils backward. The initial kinetic energy of the puck is almost enti ...

Nearly all of the initial internal kinetic energy is lost in this perfectly inelastic collision.KEintis mostly converted to ther ...

We can use conservation of momentum to find the final velocity of cart 2, becauseFnet= 0(the track is frictionless and the force ...

Figure 8.11A two-dimensional collision with the coordinate system chosen so thatm 2 is initially at rest andv 1 is parallel to t ...

The equations of conservation of momentum along thex-axis andy-axis are very useful in analyzing two-dimensional collisions of p ...