physics
9.8 N
A 1-KG mass at the earths surface weighs
about 100N
A bag of groceries has a mass of 10 Kiligrams and a weight of
the bottom
A ball rolling down an incline has its maximum kinetic energy at
2000N
A car has a mass of 1000kg and accelerates at 2 m/s 2. what net force is exerted on the car?
2000N
A car has a mass of 1000kg and accelerates at 2 meters per second per second. What is the magnitude of the net force exerted on the car?
the same
A force of 1N accelerates 1-kg box at the rate of 1 m/s2. The acceleration of a 2 KG box by a net force of 2 N is
is moving in the negative direction
A neg velocity implies that an object
moved in the negative direction
A negative displacement implies that an object
is moving in the negative direction
A negative velocity implies *
force that the ball exerts on the bat
A player hits a ball with a bat. If action is the force of the bat against
velocity is increasing
A positive acceleration implies that an objects
Moved in the positive direction
A positive displacement implies that an object
moved in the positive direction
A positive displacement implies that an object
Moving in the positive direction
A positive velocity implies that an object
The one on the moon
A rock weighs 30N on earth. A second rick weighs 30 N on the moon. Which of the two rocks has the greater mass?
No
A sailboat sails down the white river at exactly 15mph for 1 hour is the sailboat accelerating?
get closer together with time
An object that is slowing down while moving to the right can be modeled pictorially by a series of dots that
gets further apart with time
An object that is speeding up while moving to the right can be modeled pictorially by a series of dots that
the speed of light in that object
An objects index of refraction allows us to directly calculate
refracts toward the normal
As a light ray enters air from water it,
decreases
As the frequency of a wave increases, the period of the wave
Remain the same
As the wavelength of a wave in a uniform medium increases, its speed will
an upward support force
At equilibrium on a bathroom weighting scale, the downward pull of gravity on you is balanced by
Less than on the earth, but greater than zero
Compared to the weight of an object on the earth, its weight on the moon is
is equal in magnitude
For every action force, there must be a reaction force that
change by the same amount each second
If an object moves with constant acceleration its velocity must
Halves
If you double the frequency of a vibrating object its period
sometimes
Images formed by converging lenses are _____ the same size as the object
sometimes
Images formed by converging lenses are _______ real
never
Images formed by diverging lenses are ____ real
Perpendicular
In a transverse wave, the particles of the medium vibrate to move _______ to the direction the wave is traveling
Yes
Kayla slows down as she bicycles up a hill. Is she accelerating?
Distance
Meter (M) is the unit for
Velocity
Meter per second (m/s) is the unit for
Acceleration
Meter per second is the unit for
the same direction
The compressions and rarefactions in a longitudinal wave travel in
One wavelength
The distance traveled by a wave during a single period is
steeper
The faster an object travels, the _____ its distance vs time graph will be
.1second
The frequency of a certain wave is 10 hertz and its period is
watt
The metric unit for power is the
Joule
The metric unit for work is the
60 seconds
The period of the second hand on a clock is
time
The seconds is the unit of
Flatter
The slower an object travels the _____ its distance vs time graph will be.
Instantaneous speed
The speedometer of an automobile reads
speed
The speedometer of an automobile reads
Distance and TIme
The two measurements necessary for calculating average speed are
diverging lens
The type of lens that spreads parallel light is a
along the direction of wave travel
The vibrations of a longitudinal wave move
at right angles to the direction of wave travel
The vibrations of a transverse wave move
Frequency, wavelength, speed, and amplitude
Tranverse and longitudinal wave have
sound waves, light waves, water waves
Wave interference occurs for
Straight and horizontal
What does the slope of an object accelerating uniformly (at a constant rate) look like on an acceleration vs. time graph?
Speed
What is not a vector quantity
-3m
What is the initial position of an object that is modeled mathematically by the equation x(t)=4t -3 where x(t) is in meters when t is in seconds
exert on the boxers first
When a boxer hits a punching bag, the strength on his punch depends on how much force the bag can
Unless the wall simultaneously exerts the same amount of force on you
You cannot exert force on a wall
the force due to gravity on you
Your weight as measured on your bathroom scale is
the gravitational attraction force between you and the earth
Your weight is
thinner in the middle than in the edges
diverging lenses are
vibrating
the source of every sound is something that is
pushes you to the right
when you walk you push on the floor to the left and the floor
is zero
whenever the net force on an object is zero its acceleration