Lab Newton’s First and Second Laws (SIM)-1
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Physics
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LAB: NEWTON'S FIRST AND SECOND LAWS Date
03/15/2024
Student’s Name
Morgan Keefover
Introduction
Discussion Questions
1.
Write Newton's First Law. An object at rest will stay at rest and an object in motion will stay in motion at a constant speed unless
a force acts upon the object.
2.
Write Newton's Second Law. A net force produces the acceleration of an object and that is directly proportional to the magnitude of the net force and inversely proportional to the mass of the object.
1
3.
The following boxes are initially at rest when the forces shown are applied. Show the
magnitude and direction of the Force needed to keep the box at rest. a.
20N
b.
7N
4.
What happens to the acceleration if you maintain a constant net force (Fnet = 0) on an object?
What happens to the velocity? If the net force of an object is zero, then its acceleration is zero and the velocity remains constant.
5.
If an object is not accelerating, what can you determine about the net force on the object? If an object is not accelerating, the net forces on the object must be equal to zero.
Experiment
Part 1: Forces and Motion
●
Open up the PhET simulation "Forces and Motion Basics." at https://phet.colorado.edu/sims/html/forces-and-motion-basics/latest/forces-and-motion-
basics_en.html
and open the Net Force
simulator. ●
Place people who are in different tasks, as indicated in Table 1. ●
Predict the movement of the cart. ●
Click on the sum of forces, values, and the speed box at the top right-hand corner of the simulation. Record the sum of the forces on the table 1. 2
Table 1: Predicted and simulated tasks and the sum of the action of the Force in a system. Tasks
Predicted
Movement
Actual Movement (none, left, right)
Sum of Forces ( magnitude and
direction)
Same size same placement on the rope.
No movement
None
Sum=0
Direction=none
Same size different placement on the rope.
No movement
None
Sum=0
Direction=none
Different sizes, same placement on the rope.
To the left
To the left
Sum=50N
Direction=left
Different sizes, different placement on the rope. To the right
To the right
Sum=50N
Direction=right
Place two small people on the left and one
small person on the right, let the simulator
run, and add a small person to the right before it hits the barrier. To the left
To the left
Sum=0
Direction=right
No movement
To the left
Sum=0
Direction=none
3
4
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Related Questions
Draw a physical situation that would result in this equation, and explain how your drawing is consistent with the equation.
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QUESTION 16
After firing a cannon ball, the cannon moves in the opposite direction from the ball. This an example of:
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b. Second Law
c. Third Law
d. Law of Gravitation
2. Which law has this statement? “When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body”.
a. First Law
b. Second Law
c. Third Law
d. Law of Gravitation
3. A physical quantity related to the property of an object to resist changes in its motion.
a. Inertia
b. Acceleration
c. Mass
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a. True
b. False
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Describe how you could use the textbook, a piece of paper, and a desk to demonstrate Newton's first law of motion?
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where located there.
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B. Law of Acceleration
C. 1st Law of Motion
D. 3rd Law of Motion
2. A shooter experiences a recoil after firing a bullet with a gun. What Newton’s law of motion does this demonstrate?
A. 3rd Law of Motion
B. Law of Inertia
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D. 1st Law of Motion
3. The greater the force you apply to an object the greater the change in velocity is per unit of time. What Newton’s law of motion does this demonstrate?
A. 1st Law of Motion
B. Law of Interaction
C. 3rd Law of Motion
D. 2nd Law of Motion
4. What will be the new value of an object’s acceleration if we square the original mass of it?
A. Acceleration will increase by a factor equals to gravitational acceleration.
B. Acceleration will remain the same.
C. Acceleration will decrease by a factor equals to mass.
D. Acceleration will be…
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4. A student feels a gravity force of 800 N from the Earth when they're sitting in this classroom.
a. How big is the gravity force that the Earth feels because of the student? Explain.
b. Two students discuss part a)
Student 1: "The Earth is much heavier than the student, so its gravity must pull harder on the student than
the student's gravity pulls on the Earth. The gravity force the Earth feels must be less than 800 N."
Student 2: "That might be true, but I think that same 800 N would have less of an effect on the Earth than
it would on a person. Using a = F/m, the acceleration the Earth feels might be very small from an 800 N
force, because Earth is so heavy."
Which of these students, if any, do you agree with? Justify your response with words and/or equations.
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a. Law of Inertia
b. Law of Acceleration
c. Law of Interaction
d. none of the above
1. A bicycle or car will keep moving unless the rider or driver applies a frictional force through the
brakes to stop it.
2. Running
3. When you bump into someone, you fall back
4. A car still moves for a short period of time even after the brakes have been applied
5. Karma.
6. Pushing a shopping cart full of groceries.
7. pushing a stailed car
8. A situation where your dirty room will not be cleaned unless ordered by your mom.
9. Lying on top of your bed
10. Jumping up
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Answer the following with the correct letter.
1. Which law has this statement? “When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body”.
a. First Law
b. Second Law
c. Third Law
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Slow down after a period of time
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c) It explains why the Sun is much bigger than Earth.
d) None of the above
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O Speed up to the right
Slow down to the right
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_1. Object at respite or in activity.
_2. A body at rest will remain at rest and a body in motion will
continue to move unless acted upon by a net force.
_3. For every action, there is an equal or opposite reaction.
_4. There is equal force acting on two different bodies.
5. Applied force is inversely proportional to mass of the load.
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A.
first law
B.
second law
C.
third law
D.
law of gravitation
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A.
The astronaut has no mass in orbit since he is weightless.
B.
Not enough information was given to answer the question
C.
The mass is the same in both places.
D.
The astronaut's mass is less when he is in orbit.
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