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PS_Test#2 Test

Enter the letter for the matching Answer
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1.
Suppose the mass of a moving scooter is doubled and its velocity is also doubled. The resulting momentum is...
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2.
An orbiting satellite is moved from 10,000 to 30,000 km from Earth. This will result in what change in the gravitational attracting between Earth and the satellite?
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3.
You are standing freely on a motionless shuttle bus. When the shuttle bus quickly begins to move forward, you...
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4.
Which metric unit is used to express a measure of weight?
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5.
If you double the mass of a cart while it is undergoing a constant unbalanced force, the acceleration will be...
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6.
Again consider the small sports car and large SUV that collided head on and stuck together without sliding. Which vehicle must have experienced the larger deceleration during the collision?
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7.
A measure of how fast your speed is changing as you travel to campus is a measure of...
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8.
You are moving a grocery cart at a constant speed in a straight line down the aisle of a store. For this situation, the forces on the cart are...
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9.
From a bridge, a ball is thrown straight up at the same time a ball is thrown straight down with the same initial speed. Neglecting air resistance, which ball will have a greater speed when it hits the ground?
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10.
The basic difference between instantaneous and average speed is that...
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11.
According to the third law of motion, which of the following must be true about a car pulling a trailer?
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12.
Acceleration occurs when an object undergoes...
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13.
In free fall, an object is seen to have a(n)...
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14.
Neglecting air resistance, a ball in free fall near Earth's surface will have...
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15.
A tennis ball is hit, causing it to move upward from the racket at some angle to the horizon before it curves back to the surface in the path of a parabola. While it moves along this path...
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16.
An automobile has how many different devices that can cause it to undergo acceleration?
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17.
Does any change in the motion of an object result in an acceleration?
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18.
Two identical moons are moving in identical circular paths, but one moon is moving twice as fast as the other. Compared to the slower moon, the centripetal force required to keep the faster moon on the path is...
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19.
Considering the forces on the system of you and a bicycle as you pedal the bike at a constant velocity in a horizontal straight line...
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20.
According to Galileo, an object moving without opposing friction or other opposing forces will...
A.
average speed is for a total distance over a total time of trip
B.
the horizontal speed remains the same
C.
one-half as much
D.
balanced, with a net force of zero
E.
Both balls would have the same speed
F.
quadrupled
G.
constant acceleration
H.
N (Newtons)
I.
(any of the above) speed increase, speed decrease, change in direction
J.
three or more
K.
all forces are in balance, with the net fore equal to zero
L.
stay in one place over the surface of Earth as the shuttle bus moves from under you
M.
One-ninth as much
N.
four times as much
O.
acceleration
P.
The action-reaction forces between the car and trailer are equal, but the fore between the ground and car pushes them forward.
Q.
continue moving at a constant speed
R.
The small sports car
S.
increasing speed and constant acceleration
T.
Yes
Type the Answer that corresponds to the displayed Question.
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21.
A measure of the force of gravity acting on an object is called...
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22.
2.) "...". Neglecting friction doubling the mass would have what effect on the resulting final speed if you used the same force for the same length of time? The new final speed would be...
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23.
1.) You are@rest with a grocery cart@the supermarket when you see a checkout line open&apply a force to the cart for a short time&acquire a speed. Neglecting friction, how long would you have to push with 1/2 the force to acquire the same final speed?
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24.
A straight-line distance covered during a certain amount of time describes an object's...
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25.
If you double the unbalanced force on an object of a given mass, the acceleration will be...
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26.
Doubling the distance between the center of an orbiting satellite and the center of Earth will result in what change in the gravitational attraction of Earth for the satellite?
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27.
Ignoring air resistance, an object falling near the surface of Earth has an acceleration that is...
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28.
A quantity of 5m/s^2 is a measure of...
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29.
Mass is measured in kilograms (kg), which is a measure of...
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30.
After being released, a ball thrown straight up from a bridge will have an acceleration of...

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