conceptual physics chapter 1-3 exam
acceleration due to gravity
9.8 m/s^2
a pint of water is approximately A.) 1 pound b.) 1 gram c.) 1 kilogram d.) 1 quart
A
State Archimede's principle
The buoyant force of a fluid on an object is equal to the weight of the fluid displaced by that object
Whats the relationship between momentum and force?
The change in momentum is due to a force,f, being applied over a period of time,t. Ex. A car striking a tree or a stick striking a ball
motion
a continuous change of position
distance
actual path length
average acceleration
difference between final and initial accelerations divided by time
centripetal acceleration
directed toward the center of circular motion
average velocity
displacement/ travel time
average speed
distance traveled/ time
vector
has magnitude and direction
Scalar
has magnitude only
projectile motion
motion of a thrown object
free fall
motion solely under the influence of gravity
instantaneous speed
speed at an instant of time
displacement
straight lined directed distance
position
the location of an object
physics
the most fundamental of the physical sciences
acceleration
time rate of change of velocity
instantaneous velocity
velocity at an instant of time
terminal velocity
zero acceleration in free fall
Expressed in standard powers of-10 notation and rounded to four significant figures, the number .00023648 is A.) 2.364 x 10^3 B.) 2.365 x 10^4 C.) 2.365 x 10^-4 D.) 236.4 x 10^-6
C.
In buying a product, a shopper has a choice of the following amounts, all at the same price. Which is the best buy? A.) 432 cc B.) 1 pint c) 1 half-liter d.) 450 ml
C.
If the speed of an object in circular motion is increased by a factor of 5, its centripetal acceleration for the same radius will be multiplied by a factor of A.) .04 B.) .2 C.) 2.24 D.) 25 E.) 5
D.
When running and jumping to score, a basketball player seems to hang in the air, because A.) his or her acceleration is zero B.) his or her horizontal velocity is quite small C.) both components of motion are 0 D.) his or her vertical velocity is quite small
D.
A scientific law describes A.) the scientific method B.) a fundamental relationship of nature c.) the behavior of nature D.) an experiment
B.
The straight-line distance and direction between two points are, together, called A.) velocity B.) displacement C.) distance D.) acceleration
B.
