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Physics

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8th grade physics review #newtons laws # #balanced/unbalanced forces

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Questions 10

Answers

1
What is happening between points A and B?
The car is at the Point of Origin.
The car is moving farther away from the Point of Origin.
The car is moving at a constant speed.
The car is accelerating at a constant rate.
2
A bikers speed increases from 10 m/s to 25 m/s in 3 seconds. What is his average acceleration?
1 m/s
3 m/s
15 m/s
5 m/s
3
What is happening between points B and C?
The car is stopped.
The car is accelerating at a constant speed.
The car is traveling at a constant speed.
The car is at the Point of Origin.
4
When jumping off of a diving board, you push down so the board goes up, pushing you in the air.
This is Inertia.
This is the Law of Universal Gravitation.
This is Newtons 1st law.
This is Newton's third law.
5
In the absence of outside forces the momentum of an object doesn't change. This is...
Instantaneous speed
The Law of Conservation of Momentum
Friction
The Universal Law of Gravitation
6
For every action there is an equal and opposite reaction. This is...
Newton's 1st law
None of Newton's laws
Newton's 3rd law
Newton's 2nd law
7
What is Newton's second law of motion?
An object in motion stays in motion
Distance/time
F=m(a)
For every action there is an equal and opposite reaction
8
An object at rest stays at rest unless acted upon by an unbalanced force. This is...
Friction
Newton's 1st law
Newton's 3rd law
Newton's 2nd law
9
If you use the same amount of force to push 2 trucks, the tiny one will have more acceleration.
This is Newton's first law.
This is Newton's third law.
This is Newton's second law.
This is Newton's fifth law.
10
A soccer ball stays at rest until kicked. This is an example of...
Newton's 2nd law
None of Newton's laws
Newton's 3rd law
Newton's 1st law