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| For an object that is thrown up, how does the velocity up compare to the velocity down at the same level? |
equal but opposite in direction |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| For an object that is thrown up, how does the time up compare to the time down? |
equal |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| For an object that is thrown up, what is the acceleration at the top? |
still 9.8 m/s2 downward |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| For an object that is thrown up, what is the velocity at the top? |
0 m/s |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| When do we have free fall on Earth? |
dense object and short distances |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| What does a positive sign mean? |
to the right or up |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| What does a negative sign mean? |
to the left or down |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| What is the acceleration due to gravity? |
9.8 m/s2 downward |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| What is free fall? |
falling without air resistance (objects must be dropped or thrown) |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| What are the 3 equations for an accelerating object? |
vf= vi + a(∆t)
vf²=vi²+2a(∆x)
∆x= ½a(∆t)²+vi(∆t) |
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noblejas Wed, 10 Sep 2008 22:20:15 GMT |
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| What is the equation for an object moving with constant velocity? |
∆x=v(∆t) |
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noblejas Wed, 10 Sep 2008 22:20:43 GMT |
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| What does the steepness of the slope represent on an x vs. t graph? |
the speed of the object |
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noblejas Wed, 10 Sep 2008 06:05:20 GMT |
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| What does a line with a negative slope mean on an x vs. t graph? |
the object is moving towards the origin (detector) |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What does a line with a positive slope mean on an x vs. t graph? |
the object is moving away from the origin (detector) |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What does a horizontal line on an x vs. t graph represent? |
the object is standing still |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What direction does the acceleration arrow point in a motion diagram? |
towards the longer velocity arrow |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What are the usual units of acceleration? |
meters per second squared (m/s2) |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What are the usual units for velocity? |
meters per second (m/s) |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What are the usual units for time? |
seconds (s) |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What are the usual units for displacement? |
meters (m) |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What is speed? |
how fast something moves |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What is distance?2 |
how far something moves |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What is velocity? |
how fast something moves and in what direction |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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| What is displacement? |
how far something moves and the direction it moved |
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noblejas Wed, 10 Sep 2008 05:55:28 GMT |
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