Work Practice Work
Concept questions:
1. Label with 0, W+ or W- for Work and justify your answer based on the Work equation:
a. Work you do when pushing against a wall with 200. N of force.
b. Work you do when you push a box with constant force across a f
Energy
Second Definition of Work
Work is also the Change in Energy of an object
= =
Forms of Energy
There are at least five forms of energy
Mechanical
Chemical
Electrical
Nuclear
Heat
Energy
All energy is measured in Joules (J)
Energy is a scalar
En
Work and Energy Answers
1. No, K and Us cannot be negative. For K, mass is always positive and v2 will always be positive.
For Us, spring constant is always positive and x2 will always be positive.
2. Moving means you must have Kinetic Energy. Depending o
Warm Up 14
11.28.16
Rank the following Tensions from least to most:
Think about which rope has to hold more
FT1
weight.
FT3 < FT2 < FT1
20 N
FT2
10 N
FT3
20 N
Motion
Work
Acceleration
Forces
Energy
Chapter 10: Work
Energy
What is energy? How do you de
Work and Energy Review
Concept questions:
1. Can kinetic energy or the energy stored in a spring be negative?
2. If you are running, then jump in the air, which energies do you have?
3. If an object has a height, can it still have no gravitational potenti
wong (cmw4266) Forces 4 edkins (1982)
This print-out should have 32 questions.
Multiple-choice questions may continue on
the next column or page find all choices
before answering.
001 (part 1 of 2) 10.0 points
A string is tied to a book and pulled at an
a
Circular Motion
AP Physics C
Speed/Velocity in a Circle
Consider an object moving in a circle
around a specific origin. The DISTANCE the
object covers in ONE REVOLUTION is
called the CIRCUMFERENCE. The TIME
that it takes to cover this distance is called
t
The Basics of Physics with
Calculus
AP Physics C
Pythagoras started it
th
all6
Pythagoras first got interested in music when
he was walking past a forge and heard that
the sounds of the blacksmiths' hammers
sounded good together. He talked to the
blacksmi
Projectile Motion
AP Physics C
What is projectile?
Projectile -Any object which projected by some
means and continues to move due to its own
inertia (mass).
Projectiles move in TWO dimensions
Since a projectile
moves in 2dimensions, it
therefore has 2
com