Conceptual Physics
6.19 - Interactive problem: conservation of energy The law of conservation of energy states that the total energy in an isolated ...
What is the block’s kinetic energy at the bottom? Wnc = EfíEi (Fcosș)ǻx = KEfíPEi KEf = PEi + (F cos șǻx) KEf = (mgh) + (F cos ș ...
6.22 - Summary Work is the product of the force on an object and its displacement in the direction of that force. It is a scalar ...
Chapter 6 Problems Section Problems Section 0 - Introduction 0.1 Use the simulation in the interactive problem in this section t ...
5.3 A hockey stick applies a constant force over a distance of 0.121 m to an initially stationary puck, of mass 152 g. The puck ...
Section 11 - Work and gravitational potential energy 11.1 You lower a 2.50 kg textbook (remember when textbooks used to be made ...
7.0 - Introduction “The more things change, the more they stay the same” is a well-known French saying. However, though witty an ...
p = momentum m = mass v = velocity Momentum same direction as velocity Units: kg·m/s What is the toy truck’s momentum? p = mv p ...
Below, we show that this equation is equivalent to the more familiar version of Newton's second law based on mass and accelerati ...
Her impulse (change in momentum) is the same, however long it takes her to stop when she hits the ground. In the example, that i ...
Favg = 2.5×10^4 N 7.5 - Conservation of momentum Conservation of momentum: The total momentum of an isolated system is constant. ...
7.6 - Derivation: conservation of momentum from Newton’s laws Newton formulated many of his laws concerning motion using the con ...
Step-by-step derivation In these first steps, we use Newton’s third law followed by his second law. In the next steps, we apply ...
than the net effect of other forces acting on them, so we may ignore these other forces. Elastic and inelastic are two terms use ...
Conservation of kinetic energy ½m 1 vf1^2 + ½ m 2 vf2^2 = ½ m 1 vi1^2 + ½ m 2 vi2^2 Step-by-step solution First, we use the cons ...
7.10 - Interactive checkpoint: another one dimensional collision problem Two balls move toward each other and collide head-on in ...
7.12 - Interactive problem: shuffleboard collisions The simulation at the right shows a variation of the game of shuffleboard. T ...
In this derivation, two objects, with masses m 1 and m 2 , collide in a completely inelastic collision. Example 1 on the right a ...
If the objects do not conveniently lie along a line, you can calculate the x and y positions of the center of mass by applying t ...
decreases the distance from the top of her head to her center of mass, so her head does not rise as high as it would otherwise. ...
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