Objects in motion stay in motion and objects at rest stay at rest
b)
Force is equal to mass times acceleration
c)
For each action there is an equal and opposite reaction
2.
An archer shoots an arrow. The action force is the bowstring against the arrow, the reaction force is...
a)
Air resistance against the bow
b)
the arrow's push against the bowstring
c)
the grip of the archer's hand on the bow
3.
A baseball player bats a ball with a force of 1,000 N. The ball exerts a reaction force (without any additional forces action on it) against the bat of...
a)
Less than 1, 000 N
b)
1,000 N
c)
More than 1,000 N
4.
What is the reaction force to a foot pushing down on the floor?
a)
The foot going through the floor
b)
The floor pushing back against the foot
c)
The floor breaking to the foot
5.
According to Newton's Third law the strength or magnitude of forces will be...
a)
smaller
b)
equal
c)
larger
6.
A swimmer pushes on the water and the water pushes on the hand and the swimmer moves forward. What is the ACTION force?
a)
Swimmer pushes on the water
b)
the water pushes on the hand and the swimmer moves forward
7.
A swimmer pushes on the water and the water pushes on the hand and the swimmer moves forward. What is the REACTION force?
a)
Swimmer pushes on the water
b)
the water pushes on the hand and the swimmer moves forward
8.
Newton's _____ Law of Motion means that for every force there is a reaction force that is equal in size, but opposite in direction.
a)
First
b)
Second
c)
Third
d)
Fourth
9.
The ____ of an object is the force of gravity on the object.
a)
mass
b)
weight
c)
volume
d)
density
10.
How many Laws of Motion are there?
a)
1
b)
2
c)
3
d)
4
11.
Who was the scientist who gave us the Laws of Motion?
a)
Sir Isaac Newton
b)
Albert Einstein
c)
Galileo Galilei
d)
Aristotle
12.
For every action there is an equal and opposite re-action.
a)
Newton's First Law of Motion
b)
Newton's Second Law of Motion
c)
Newton's Third Law of Motion
d)
Newton's Fourth Law of Motion
13.
Which best explains why we are able to accelerate forward when starting to run?
a)
As one leg moves backward, it provides an equal and opposite force for the other foot to move forward.
b)
No acceleration takes place. Runners are always at a fixed velocity.
c)
The striking foot pushes backward against the ground. The friction with the ground provides an equal and opposite force forward.
d)
The runner's upper body quickly leans forward, causing the entire body to begin accelerating forward
14.
When a large truck pushes a small car with a given force, the small car is applying an equal and opposite force on the truck.
a)
True
b)
False
15.
What happens when two objects, such as a baseball and a bat, collide?
a)
They hit each other with the same force in the same direction.
b)
They hit each other with the same force in opposite directions.
c)
They hit each other with unequal force in opposite directions.
d)
One remains still while the other one moves in the same direction.
แป้นคำตอบ
Newton's Third Law of Motion
คำถามทั้งหมด: 15
1.
c) For each action there is an equal and opposite reaction
2.
b) the arrow's push against the bowstring
3.
b) 1,000 N
4.
b) The floor pushing back against the foot
5.
b) equal
6.
a)
Swimmer pushes on the water
7.
b)
the water pushes on the hand and the swimmer moves forward
8.
c) Third
9.
b) weight
10.
c) 3
11.
a) Sir Isaac Newton
12.
c) Newton's Third Law of Motion
13.
c) The striking foot pushes backward against the ground. The friction with the ground provides an equal and opposite force forward.
14.
a) True
15.
b)
They hit each other with the same force in opposite directions.
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