Newtons 1st & 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.
opposite
large
resultant
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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 slows down
The object maintains constant velocity
The object speeds up
The object changes direction
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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 not accelerating
The moon is moving with constant velocity
The moon is moving at a constant speed
The moon is 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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