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Two forces act on a single object. One of them is 15 Newtons up
and the other is 12 Newtons down. What is the total force on the
object?
27 N
-27 N
-3 N
3 N
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Question 111 pts
If the distance between two objects increases by 3, what happens
to the gravitational force between them?
increases by 3
decreases by 1/3
increases by 9
decreases by 1/9
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Question 121 pts
If you...
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If you are 5.5 slugs on earth, how many slugs would you be on
the moon?
more
less
the same
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A heavy lineman tackles a light running back. Who experiences
the greater acceleration?
the lineman
they both experience the same acceleration
the running back
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Question 71 pts
If you are 5.5 slugs on earth, how many slugs would you be on
the moon?
more
less
the same
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Question 81 pts
If a book weighs 10 lbs, what is the total force on it while it
is in Free Fall?
10 lbs
0 lbs
20...
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1
a). If I weigh 215lbs on earth, how much would I weigh (in
pounds) on the moon where the acceleration due to gravity is 1.625
m/s2.
b). A horizontal force of 86.7 N is applied to a 50.5 kg crate
on a rough, level surface. If the crate accelerates at 1.03 m/s2,
what is the coefficient of kinetic friction between the crate and
then surface?
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Suppose there is a planet orbiting close to a black hole, as
Earth is to the Moon. There is an ocean on that planet. If you
happen to be there, what would you notice? Select one:
a. The ocean has tides, but only once per day, unlike Earth when
we have them twice per day
b. The ocean has tides, but they are way higher than on
Earth
c. The ocean has tides, but they are way smaller than on...
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A block is on a frictionless horizontal table, on earth This block accelerates at 3. 1 m/'s2 when a 40 N horizontal force is applied to it. The block and table are then set up on the moon where the acceleration due to gravity is 1 62 m/s2. A hortzontal force of 20 N is applied to the block when it is on the moon What accoleration does this force impart to the block? ● 16m/S2 ● 14m/s2 ● 20m/s2...
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1) At what point between the Earth and Moon do the gravitational
forces from each balance? Give your answer as the distance from the
center of Earth.
2) At what height above the Earth is the freefall acceleration
half of the value 9.8 m / s²?
3) The Earth, Moon and your 5000 kg spaceship form an
equilateral triangle and some instant in time.
Define an xy-plane
containing all three objects. Define the origin at the location of
your space...
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Please do all questions and show work.
1. (2 points) A 200 g mass attached to a light spring oscillates on a frictionless, horizontal table. The mass is pulled 8 cm and released. A student finds that 12 oscillations takes 18 seconds. (a) What is the spring constant? (b) What is the maximum speed of the mass? 2. (3 points) The position of an object connected to a spring varies with time according to the expression x = (7.5 cm)cos...
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Use a pencil to shade in the dark side of the moon in each of these eight moon posi- tions in Figure 26-1. Then shade the circles in Figure 26-2 to show how the moon would appear from Earth at each position in its orbit Crescen-) law> pb . FIGURE 2妓&ard do the lunar phases look like from Ealrth 1: What motion of the moon causes the phases we observe from Earth? thel hado amund the cartl 2. Figure 26-1...
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A car is moving at a speed of 60 m/s, when the driver applies
the brakes, which causes a deceleration of 2 m/s2. How
many seconds will it take for the car to stop and how far will it
travel till it stops?
30 sec, 450 meters
25 sec, 800 meters
30 sec, 1800 meters
20 sec, 900 meters
30 sec, 900 meters
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Question 192 pts
You throw a ball downward from a height of 5 meters...
A block is on a frictionless horizontal table, on earth This block accelerates at 3. 1 m/'s2 when a 40 N horizontal force is applied to it. The block and table are then set up on the moon where the acceleration due to gravity is 1 62 m/s2. A hortzontal force of 20 N is applied to the block when it is on the moon What accoleration does this force impart to the block? ● 16m/S2 ● 14m/s2 ● 20m/s2...
Please do all questions and show work.
1. (2 points) A 200 g mass attached to a light spring oscillates on a frictionless, horizontal table. The mass is pulled 8 cm and released. A student finds that 12 oscillations takes 18 seconds. (a) What is the spring constant? (b) What is the maximum speed of the mass? 2. (3 points) The position of an object connected to a spring varies with time according to the expression x = (7.5 cm)cos...
Use a pencil to shade in the dark side of the moon in each of these eight moon posi- tions in Figure 26-1. Then shade the circles in Figure 26-2 to show how the moon would appear from Earth at each position in its orbit Crescen-) law> pb . FIGURE 2妓&ard do the lunar phases look like from Ealrth 1: What motion of the moon causes the phases we observe from Earth? thel hado amund the cartl 2. Figure 26-1...