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46 Cards in this Set
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 Back
An object's momentum  as it's mass increases.

INCREASES


An object starting from rest and undergoing a constant acceleration of 2 m/s will have a velocity of... What equation will be used for this problem?

VELOCITY
v = a t 

According to Newton's laws, a planet in orbit about the sun is actually  toward the sun.

ACCELERATING


When an object orbits the sun, it's always accelerating toward the sun or else it would what?

FLY OFF ON A TANGENT


When dealing with acceleration, a planet in orbit is actually always accelerating toward the sun.
When dealing with velocity, a planet in orbit spends part of its orbit accelerating  the sun and then part accelerating  the sun. 
TOWARD AND FROM


Newton's laws predict that a planet will move fastest when it is  to the sun and then sweep equal pie shaped areas about the in  incrememnts of time.

CLOSEST, EQUAL


The conservation of momentum requires that the momentum of an object only change when what.

A FORCE IS ACTING UPON IT


According to Newton's laws, the sun must always .

BE ACCELERATING


A 2 kg object has a velocity of 4 m/s toward the east. It has a momentum of... What equation would be used for this problem?

MOMENTUM
p = m v 

An object thrown near and parallel to the earth's surface will travel .

IN AN ARC


A baseball player throws a ball straight up in the air and catches it in the exact same point when it comes down. WITHOUT AIR RESISTANCE, the ball will have the  speed as when it left the player.

SAME


A ball played throws a ball in the air and catches it at the same spot. WITH AIR RESISTANCE, the ball will have a  speed as when it left the player.

SLOWER


An object's force is just a particular type of 

FORCE


A correct set of units for speed are .

M/S


Speed, s, of an object is a change in .

DISTANCE


The units m/s may represent...

AN ACCELERATION


A car traveled 300 miles in 6 hours to the east. The average speed of the car was... What would the equation used be?

SPEED
s = change in distance/ change in time 

If a zero net force is exerted on a body, then the body may be moving in a   or it may be .

MAY BE MOVING IN A STRAIGHT LINE OR IT MAY BE MOTIONLESS


An object has a weight of 40 N on the surface of a planet with an acceleration due to gravity of m/s. The mass is... What equation is used?

FORCE
f = m a 

If body A exerts a force on body B, then body B may not   or it may change  of motion.

MAY NOT BE MOVING OR IT MAY CHANGE IT'S DIRECTION OF MOTION


When the distance between the centers of two massive objects is decreased, the gravitational force between them .

INCREASES


Body A and Body B are the same distances from the earth. We know the force of the earth exerted on Body A is one half the force that it exerts on Body B. So, Body A must as Body B.

HAVE HALF AS MUCH MASS


The physial quantity most closesly identified with inertia is 

MOMENTUM


If the mass of the earth were to increase by 4, then the acceleration due to earth's gravity would  by a factor of 4.

DECREASE


When the disttance between the two centers of two massive objects is changed by a factor of 6, the gravitational force between them changes by a factor of 

36


A 5 kg object 3 meters above the earth has a potential energy of... What is the equation?

POTENTIAL ENERGY
pe = m g h g= 9.087 m/s^2 

The kinetic energy of a 5 kg object with a velocity of 10 m/s is... Equation/

KINETIC ENERGY
ke = 1/2mv^2 

When the distance between two charged particels is decreased by a factor of 2, then the electirc force between them  by a factor of 4.

INCREASES BY FACTOR OF 4


The ultraviolet catastrophe refers to the inability of physics to correctly predict  at the beginning of the 20th century.

LIGHT EMITTED FROM HOT OBJECTS


According to Kepler's laws, a planet in orbit about the sun moves  when it's closest to then sun.

FASTEST


According to Kepler's Laws, a planet in an orbital period about the sun of 30 years must be grater than 9 AU. What equation is used?

P^2 = D^3
30^2 = 900 = D^3 9 SQUARED = 81 9 CUBED = 729 Must be higher than 9 

True or false?
The electromagnetic force is responsible for holding nuclei together. 
FALSE


True or false?
Aristotle believed that heavenly motion was fundamentally the same as earthly motion. 
FALSE


True or false?
The ultraviolet catastrophe can be resolved by employing relatvitiy. 
FALSE


First law of motion states that an object continues its present straight line motion unless acted upon by a   .

NON ZERO FORCE


Second law states that an acceleration, a, of an object is equal to net force. What is the equation of net force?

F = M A
A = F/M 

What are some units of acceleration?

M/S^2
Mass KG KG M/S^2 IS A NEWTON 

Speed, s, is a change in distance, d, that object moves in given time, t. What are some units of speed?

S = D/T
MILE/HOUR 

What is the equation for acceleration?

A= V/T


The thrid law states that for every action that is an  and  reaction.

EQUAL AND OPPPOSITE


Momentum can be thought of as a numberical measure of .

INERTIA


The gravitational force is the magnitutde of force of attraction, Fg, between two bodies with masses, m1 and m2, are seperated by distance, r.. What is g equal to?

6.6 X 10


When gravitational force is between a planet and a small obkect, the force is the  of the object.

WEIGHT


Linear momentum is a mathematical formulation of Newton's  .

FIRST LAW


The only time momentum can change is when it's acted upon by a .

NON ZERO NET FORCE


Angular momentum is conserved in the absence of a nonzero external force. What is the equation?

L = MVR
ANGULAR MOMENTUM= L MASS= M VELOCTIY= V DISTANCE= R 