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