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25 Cards in this Set
- Front
- Back
________________ is directly proportional to net force. ______________ ~ net force |
Acceleration |
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What is dependent on the "stickiness" or the tiny ridges between two materials? |
Friction |
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Friction can also occur between objects at _______. |
Rest |
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When the net force of an object is zero, the acceleration is ___________. |
Zero |
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An object with a mass of 1-kg on Earth weighs how much (N)? |
10N |
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A object is pulled northward by a force of 10N and is also being pulled southward by a force of 25N. What is the resultant force? |
15N |
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What is the ratio of kg to N on Earth? |
1-kg to 10N |
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Your weight measured on a scale is technically measuring: |
Force due to gravity acting on you |
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If the mass of a cart is quickly loaded to have twice the mass while propulsion remains constant, acceleration is: |
Halved |
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An object moving at a constant velocity, an object at rest, and an object in mechanical equilibrium all have___________. |
Zero Acceleration |
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When an object is suspended by a vertical rope, and the block accelerates upward by the rope, the rope's tension is: |
Greater than its weight |
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Neglecting friction, a large and small block begin to slide down an incline at the same time. The smaller block reaches the bottom in what relation to the larger block? |
At the same time |
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A rocket with a sustained and constant upward force has an increasing acceleration because:
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Mass decreases as fuel is used |
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If less horizontal force is applied to a sliding object than is needed to maintain constant velocity, the object eventually: |
Stops |
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The quantity of matter in an object. (kg) |
Mass |
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Force upon an object due to gravity |
Weight |
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How is Acceleration proportional to mass? |
Inversely |
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Acceleration = |
(net force)/(mass) |
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When an object falls downward and experiences the force of gravity pulling it down + air drag acting upward = |
Nonfree Fall |
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Non-Free Fall depends on _____ |
Speed and frontal surface area |
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Nonfree Fall term when air resistance equals weight and net force is zero. |
Terminate |
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When acceleration terminates |
Terminal Speed |
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When acceleration terminates, with implied or specified direction. |
Terminal Velocity |
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In what type of environment would a feather and a rock fall at the same rate? |
Vacuum |
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What factors affect air resistance on falling objects? |
Frontal Area & Speed |