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Question 1

The table shows the acceleration due to gravity on four different planets. What planet is a person standing on if the person has a mass of 85.0 kg and weighs 305 N?

a
Venus
b
Mars
c
Earth
d
Mercury
Question 2
The table below shows the mass and velocity of four objects. Which object has the least inertia?

a
Y
b
W
c
X
d
Z
Question 3
Match each term to its correct description.

Column A
1.
Concentration:
Concentration
2.
Saturated Solution:
Saturated Solution
3.
Unsaturated Solution:
Unsaturated Solution
4.
Supersaturated Solution:
Supersaturated Solution
Column B
a.A heated solution that holds more dissolved solute than is possible at a lower temperture.
b.A solution that holds less solute than is possible at a given temperature. More solute can dissolve.
c.A solution with as much dissolved solute as it can hold at a given temperature. No more solute can be dissolved.
d.The amount of one substance in a certain volume of another substance.
Question 4
Looking at the periodic table, determine the number of valence electrons present in Phosphorous (P).

a
4 valence electrons
b
2 valence electrons
c
3 valence electrons
d
5 valence electrons
Question 5
Which of the following would be a situation with unbalanced forces?

a
Two people pulling on the same side of a wheelbarrow
b
A team of players in tug of war pulling on the rope, each team with equal numbers of people pulling with equal strength
c
Two people of opposite sides of a big tire. One pushes the tire and one pulls it with equal force
d
Two people not touching a crate that is sitting stationary
Question 6
During an experiment in which you are investigating the acceleration changes due to force changes, what value must stay constant during these trials?

a
Force
b
Velocity
c
Acceleration
d
Mass
Question 7
Which of the following would be an example of Newton's Third Law forces?

a
A horse pulling a horse cart
b
A hammer striking a nail
c
A soccer ball bouncing off a wall
d
All of the above
Question 8
Which of the followng is Newton's Second Law?

a
An object in motion will stay in motion unless acted upon by an unbalanced outside force
b
Force = mass times acceleration
c
When one object puts a force on the another object, the second object puts a force back on the first, equal in magnitude and opposite in direction
Question 9
As you are walking, you foot gets caught on an uneven piece of sidewalk and you trip and fall. Which of the following explains what is happening using Newton's Laws?

a
The sidewalk pushed you, causing a rapid force that made you fall
b
The sidewalk provided a force to stop your foot, but the top of your body was still moving which is what causes you to tip over
c
Your foot hit the sidewalk and provided a force on it, so the sidewalk will provide another force back on your foot, equal in magnitude but opposite in direct
d
Your foot pushes the sidewalk with such force that it causes the next piece of sidewalk to be uprooted, which makes your next step miss your footing
Question 10
A block with a mass of 55 kg is pulled with a force of 220 N to the right. Assuming a frictionless surface, what will be the acceleration of the block?

a
9.8 m/s2

b
22 m/s2

c
4.0 m/s2

d
0.25 m/s2

1 answer

Here are the answers to your questions based on the provided information:

Question 1
To find the gravity on the planet where a person weighing 305 N has a mass of 85.0 kg, we use the formula:
Weight (W) = Mass (m) × Acceleration due to gravity (g)
305 N = 85.0 kg × g
\[ g = \frac{305 N}{85.0 kg} \approx 3.59 , m/s² \]

  • Option b: Mars (Mars has a gravity of approximately 3.71 m/s², which is close to our calculated value).

Question 2
Inertia is directly related to mass - the more mass an object has, the more inertia it has. Thus, we need to look for the object with the least mass.

  • Answer cannot be determined without the mass values for objects W, X, Y, and Z. Please provide those details.

Question 3

  1. Concentration: d. The amount of one substance in a certain volume of another substance.
  2. Saturated Solution: c. A solution with as much dissolved solute as it can hold at a given temperature. No more solute can be dissolved.
  3. Unsaturated Solution: b. A solution that holds less solute than is possible at a given temperature. More solute can dissolve.
  4. Supersaturated Solution: a. A heated solution that holds more dissolved solute than is possible at a lower temperature.

Question 4
Phosphorus (P) has 5 valence electrons.

  • Answer: d. 5 valence electrons

Question 5
Unbalanced forces occur when the forces acting on an object do not cancel each other out.

  • Answer: a. Two people pulling on the same side of a wheelbarrow (they are applying unequal forces to the wheelbarrow).

Question 6
When investigating changes in acceleration due to force changes, mass must remain constant.

  • Answer: d. Mass

Question 7
Examples of Newton's Third Law involve action-reaction pairs.

  • Answer: d. All of the above (all options describe action-reaction force pairs).

Question 8
Newton's Second Law is described by the relation between force, mass, and acceleration.

  • Answer: b. Force = mass times acceleration

Question 9
When you trip, your foot stops but your upper body continues moving, which can cause you to fall due to Newton's First Law.

  • Answer: b. The sidewalk provided a force to stop your foot, but the top of your body was still moving which is what causes you to tip over

Question 10
Using Newton's second law (F = m * a), we calculate acceleration as follows:
\[ a = \frac{F}{m} = \frac{220 N}{55 kg} = 4.0 , m/s² \]

  • Answer: c. 4.0 m/s²

Feel free to provide any more details or questions!