If you took your weight first at sea level and then on top of a very tall mountain, you would find that your weight:
a
decreases
b
increases
c
stays the same
Question 2 (1 point)
This graph shows an object in free fall. Assume there is no air resistance. What is the only force acting on this object?
freefall_6171d02559b9c.png
(1 point)
a
acceleration
b
mass
c
gravity
d
terminal velocity
Question 3 (1 point)
The strength of gravity between two objects depends on these 2 factors: (You must select both answers to get full credit.)
a
Weight of the objects
b
Mass of the objects
c
Distance between the objects
d
Melting Point of the objects
e
Volume of the objects
Question 4 (1 point)
Smaller masses experience more gravitational force than bigger masses.
True
False
Question 5 (1 point)
A feather and a hammer are in free fall when...
27-titanic_6171cb788ac18.gif
a
gravity is the only force acting on them.
b
gravity and air resistance act on them.
c
air resistance is the only force acting on them.
d
weight is the only force acting on them.
Question 6 (1 point)
In the absence of air, two objects with different masses...
a
fall at exactly the same rate.
b
fall at exactly the same time.
c
fall at exactly the same distance.
d
suffocate!
Question 7 (1 point)
An asteroid moves away from our planet. What happens to the gravitational attraction between it and the earth as it zooms away?
a
It decreases.
b
It increases.
c
It does not change.
d
It becomes zero.
Question 8 (1 point)
The force of gravity pulls the moon and Earth toward each other.
True
False
Question 9 (1 point)
What would happen to the strength of gravity (between the Earth and the moon) if the moon were somehow pushed closer to Earth?
a
Gravity would increase.
b
Gravity would decrease.
c
Gravity would remain the same.
d
A black hole could be created.
Question 10 (1 point)
Which statement about gravitational attraction is correct?
a
All objects on Earth experience the same gravitational attraction.
b
All objects on Earth experience the same gravitational attraction.
c
All objects with mass experience gravitational attraction.
d
Objects in space will not have any gravitational attraction.
Question 11 (1 point)
Use the table to answer the question.
A spacecraft flies within 500,000 km of each of these planets. Which one would gravitationally attract the spacecraft the most?
a
Venus
b
Mars
c
Jupiter
d
Neptune
Question 12 (1 point)
A hammer (500 grams), a small parachute (21 grams), and a baseball (145 grams) are all dropped from a height of 25 meters. The hammer and baseball take about the same amount of time to fall. Which statement describes the time it takes for the parachute to fall?
a
The parachute takes less time to fall because it has the least mass.
b
The parachute takes less time to fall because it has the most surface area.
c
The parachute takes longer to fall because of greater air resistance.
d
The parachute takes the same amount of time to fall because the effect of gravity is the same.
Question 13 (1 point)
On which planet would you weigh the most?
a
Uranus
b
Earth
c
Venus
d
Mars
Question 14 (1 point)
What increases as gravitational force increases?
a
Inertia
b
weight
c
mass
Question 15 (1 point)
According to the graph, what is the object's speed at 3 seconds?
a
39.2 m/s
b
29.4 m/s
c
19.6 m/s
Question 16 (1 point)
What are two forces that act on a leaf when it falls from a tree?
a
gravity
b
air resistance
c
inertia
d
acceleration
e
mass
Question 17 (1 point)
Why do you weigh less on the moon than on Earth?
a
Moon has more mass and therefore more gravity
b
Moon has less mass and therefore more gravity
c
Moon has more mass and therefore less gravity
d
Moon has less mass and therefore less gravity
Question 18 (2 points)
Four different balls with different masses (measured in grams) were dropped from the same height on Earth. Assuming no other forces acted on the balls, match each ball with the gravitational force (measured in newtons) it experienced as it fell.
Column A
1.
:
2.
:
3.
:
4.
:
Column B
a.4018 N
b.1401N
c.1078 N
d.451 N
Question 19 (1 point)
During a football game, a student accidentally knocks similar gym bags, one empty and one full of shoes and clothes, off the back of the bleachers. If there is no wind resistance, which bag will hit the ground first?
a
The empty bag will hit the ground first.
b
The full bag will hit the ground first.
c
They will both hit the ground at the same time.
d
This cannot be determined because the dimensions of the bags are needed.
Question 20 (1 point)
What is the weight of an object with a mass of 20 kilograms on a planet that has an acceleration of gravity of 9.8 m/s2? (Be sure to sure your work.)
- Decreases
- I got it wrong, it is NOT Velocity
- mass & distance
- false
- gravity is the only force acting on them
- I got it wrong, NOT Fall at the same time
- it decreases
- true
- gravity would increase
- all objects with mass experience gravitational attraction
- Jupiter
- The parachute takes longer to fall because of greater air resistance.
- earth
- Weight
- 29.4
- gravity & air resistance
- moon has less mass and therefore less gravity
- 143g -> 1401n 110g -> 1078n 410g -> 4018n 46g -> 451n
they will both hit the ground at the same time
196N
48 views and no one has answer the man yet…I need answers😭
we not getting them answers anytime soon. 💀
Those answers taking 1,000 years to get here
All of Fries answers are correct but instead of "fall exactly at the same time" it's "fall exactly at the same rate" and #2 is gravity not velocity :)
Decreases
idk
mass & distance
false
gravity is the only force acting on them
idk
it decreases
true
gravity would increase
all objects with mass experience gravitational attraction
Jupiter
lol idk
earth
idk
29.4
gravity & air resistance
moon has less mass and therefore less gravity
ur on ur own for #18
they will both hit the ground at the same time
196N (20x9.8)