PES 100 –Physics in Everyday Life – Exam #1 Study Guide
Chapters 1 and 2: Linear Motion, Rotational Motion
Definitions
1.
Some quantities in physics we describe as vector quantities. What two elements to all vector quantities have in
common?
A. Name and number
B. Position and speed
C. Magnitude (or value) and direction
D. Size and shape
Mass, weight, force, position, velocity, acceleration, vector quantity, angular velocity, angular acceleration, moment
of inertia, sliding friction, static friction, work, impulse, angular impulse, conservation, radian, right-hand rule,
center of mass,
Newton’s Laws: 1st, 2nd, 3rd (linear), 1st, 2nd, 3rd (angular), Potential Energy, Kinetic Energy
Units
2.
The International Standard (SI), or metric system, units for mass are:
A. Kilograms (kg)
B. Newtons (N)
C. Pounds (lb)
3.
The acceleration due to gravity in the metric system is:
A. 4.5 m/s every second
B. 32 m/s every second
C. 9.8 m/s every second
SI units: length, time, mass, energy, force, power, grav. acc. , work, momentum, impulse
English units: length, time, power
Relationships
4.
You travel at a constant velocity for one hour, so you have moved a certain distance. If your velocity had been
greater, your distance would have been:
A. Greater
B. Less
5.
Angular momentum depends on all but which of the following quantities?
A. Gravity
B. Mass
C. Distance the mass is from the spin axis
Force and linear acceleration, weight, torque & angular acceleration, velocity, position, KE, PE, momentum, angular
momentum, frictional force, linear impulse, angular impulse, torque & force & lever arm, moment of inertia, static
friction vs. sliding friction
Applications
6.
A truck applies his brakes in order to come to a stop at a red light. Which of Newton’s laws is best used to
describe this situation?
A. Newton’s 1st Law of linear motion
B. Newton’s 1st Law of rotational motion
C. Newton’s 2nd Law of linear motion
Parabolic trajectories
Elevators
Mechanical devices: ramps, pulleys, levers
Bumper cars
Merry-go-rounds and swings
Moving a rock with a lever.
Moving a cabinet.
Rollers, wheels, bearings
Bumpers, bungee cords, springs
R. Gist
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Fall 2004