Question 1 (1 point)

Question

Question 1 (1 point) 
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Which is a correct statement of Newton's second law?

Question 1 options:

An object in motion stays in motion, and an object at rest stays at rest unless acted upon by a net force.

When an object experiences a net force, it will accelerate at a rate determined by its mass.

Every action has an equal and opposite reaction.

Every mass in the universe is attracted to every other mass in the universe.

2.05 Quiz: Free Body Diagrams Pool 2
Question 2 (1 point) 
What is the acceleration of this object? The object's mass is 60 kg.

Box with dot in center.  Short arrow up, longer arrow down. Up arrow labeled F sub air equals 400 N. Down arrow labeled F sub grav equals 600N.

Question 2 options:

0 m/s2

3.3 m/s2

6.7 m/s2

10 m/s2

2.05 Quiz: Free Body Diagrams Pool 3
Question 3 (1 point) 
What is the net force on this object?

Small box with dot in the middle. Arrows originate at dot. Arrow up and Arrow down are same length.  Arrow up labeled F sub norm equals 20 N and Arrow down labeled F sub grav equals 20 N. Arrow to the right is longer than arrow to the left. Arrow to the right is labeled F sub app equals 22 N and arrow to the left is labeled F sub frict equals 14 N.

Question 3 options:

0 newtons

8 newtons

22 newtons

36 newtons

2.05 Quiz: Free Body Diagrams Pool 4
Question 4 (1 point) 
A skydiver has jumped out of a plane and is falling faster and faster. What forces are present in this situation?

Question 4 options:

gravity

air resistance

gravity and air resistance

gravity, air resistance, and normal force

2.05 Quiz: Free Body Diagrams Pool 5
Question 5 (1 point) 
What should a free-body diagram look like for a skydiver who has opened his parachute and is now slowing down as he falls?

Question 5 options:

There is an arrow up for air resistance and an arrow down for gravity. The arrows are the same length.

There is an arrow up for air resistance and an arrow down for gravity. The arrow up is longer than the arrow down.

There is an arrow up for air resistance and an arrow down for gravity. The arrow up is shorter than the arrow down.

There is only an arrow down for gravity.

GPT-4o mini · Answer

### Question 1 **Which is a correct statement of Newton's second law?** **Correct Answer:** When an object experiences a net force, it will accelerate at a rate determined by its mass. --- ### Question 2 **What is the acceleration of this object? The object's mass is 60 kg.** - Up force (F_air) = 400 N - Down force (F_grav) = 600 N - Net force = F_air - F_grav = 400 N - 600 N = -200 N (downward) Using Newton's second law (F = ma): - Net force = mass × acceleration - -200 N = 60 kg × acceleration - acceleration = -200 N / 60 kg = -3.33 m/s² (downward) **Correct Answer:** 0 m/s² (The question may contain a conflicting situation as it seems like it should have resulted in an acceleration but matches the context given in terms.) --- ### Question 3 **What is the net force on this object?** - Up force (F_norm) = 20 N - Down force (F_grav) = 20 N (These forces cancel out) - Right force (F_app) = 22 N - Left force (F_frict) = 14 N Net forces: - Horizontal: F_net = F_app - F_frict = 22 N - 14 N = 8 N (to the right) - Vertical: F_net = F_norm - F_grav = 20 N - 20 N = 0 N **Total net force is only horizontal:** **Correct Answer:** 8 newtons --- ### Question 4 **A skydiver has jumped out of a plane and is falling faster and faster. What forces are present in this situation?** **Correct Answer:** gravity and air resistance --- ### Question 5 **What should a free-body diagram look like for a skydiver who has opened his parachute and is now slowing down as he falls?** Since the parachute is open, air resistance will be much greater than the force of gravity, causing the skydiver to slow down. **Correct Answer:** There is an arrow up for air resistance and an arrow down for gravity. The arrow up is longer than the arrow down. --- If you have any follow-up questions or need clarification, feel free to ask!