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S1W6 Newton's first two laws

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Last updated 5 months ago
18 questions
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Question 1
1.

This is a position vs time graph. is the man walking faster or slower in the green section compared to the red section?

Question 2
2.

what is the farthest distance the walker gets from his starting point?

Question 3
3.

A clown is throwing a ball up and down on a railroad platform moving through town. Which of the following is the difference between the frame of reference of someone on the car, vs someone on the ground?

Question 4
4.

Plug and chug time. You are on earth and you toss a ball up in the air with the initial velocity of 4 m/s. The ball starts 1 meter from the ground. How long does it take to hit the ground. given the following equation, what do you know?

1 m
4 m/s
-9.8 m/s^2
9.8 m/s^2
5 seconds
3 m
0 m
Variable we are looking for
a
v0
x0
time when it hits
position when it hits
Question 5
5.

which of the following acceleration graph matches the above velocity graph?

Question 6
6.

Question 7
7.

Which of these is the best definition of inertia?

Question 8
8.

Mass is simply a measurement of inertia. What is the definition of mass?

Question 9
9.

Which of the following is a good example of Newton's first law of motion?

Question 10
10.

Some people (such as me) will state newton's first law as a "unbalanced" external force rather than a "net" force. What does unbalanced mean here?

Question 11
11.

Read in your physics book the following 56-62, the sections on Newton's first law, mass, and newtons second law of motion. the first two sections should re-ieterate the last video. Focus on the section on the second law. do you have any questions?

Question 12
12.

If an object has no acceleration, does that mean there are no forces on the object? explain why or why not?

Question 13
13.

What is the difference between weight and mass?

Question 14
14.

true/false - and object with mass can have no weight

Question 15
15.

Question 16
16.

assume a rocket had a constant acceleration of 0.01m/s^2, Using v=at, what is the velocity of that rockets after 10 days?

Question 17
17.

A 400 kg bear is grasping a vertical tree slides down at a constant velocity. What is the friction force that acts on the bear?

Question 18
18.