A force of 1 N is the approximate force needed to lift ....
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Question 2
2.
What law is described by:
"An object continues to remain in a state of rest or uniform motion unless an unbalanced force acts on it"
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Question 3
3.
What is another name for Newton's first law of motion?
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Question 4
4.
A 2 000 kg car is sitting at rest in a parking lot.
A bike and rider with a total mass of 60 kg are traveling along a road at 10 km.h-1.
Which system has more inertia? Why?
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Question 5
5.
What is the net external force on an object in free-fall on Earth if you were to ignore the effect of air?
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Question 6
6.
One object exerts a force of magnitude F1 on another object and experiences a force of magnitude F2 in return. What is true for F1 and F2?
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Question 7
7.
Two objects rest on a uniform surface. A person pushes both with equal force. If the first object starts to move faster than the second, what can be said about their masses?
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Question 8
8.
A 55 kg woman stands on a bathroom scale inside an elevator. The scale reads 600 N. What do you know about the motion of the elevator?
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Question 9
9.
If a lift is moving upwards but experiences a downwards acceleration we can say that it is
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Question 10
10.
When an object rests on an inclined plane that makes an angle θ with the horizontal, what is the expression for the component of the object's weight force that is parallel to the incline?
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Question 11
11.
If an object moves with a constant velocity, we can conclude that
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2
Question 12
12.
A block rests on an inclined rough surface that makes an angle θ with the horizontal. The block remains at rest at θ is slowly increased. Which is the best description of how the magnitudes of the normal force and static frictional force of the rough surface on the block change as θ is slowly increased?
increases
decreases
remains the same
Normal force
Static frictional force
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Question 13
13.
When a force of F acts on an object of mass m, it experiences an acceleration a. If the force is doubled and the mass of the object is halved, what is the new a?