Newtons 1st and 2nd Laws
This lesson covers:
- Newton's first law
- Newton's second law
- The equation for Newton's second law:
Newton's first law:
A __________ force is required to change the motion of an object.
resultant
opposite
large
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A moving object that has no resultant force acting upon it will:
Continue moving at the same velocity
Slow down
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Newton's second law:
A resultant force will cause an object to accelerate in the direction of the force.
Which of the following could not be caused by a resultant force acting on an object?
The object maintains constant velocity
The object changes direction
The object slows down
The object speeds up
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An example of circular motion is the moon orbiting the earth.
Which of the following are true?
(Select all that apply)
The moon is moving at a constant speed
The moon is accelerating
The moon is moving with constant velocity
The moon is not accelerating
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The formula for Newton's second law is:
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A object has a mass of 4 kg and is accelerating at 3 m/s2.
Calculate the resultant force acting on the object.
N
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A resultant force of 30 N acts on a 12 kg object.
What is the object's acceleration?
m/s2
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