Term
| displacement ("delta vector r") |
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Definition
| the vector drawn from the initial position ("vector r knot") at time "t knot" to the final position "vector r" at time "t" |
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Term
| average velocity ("vector v bar") |
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Definition
| "delta vector r" (displacement) divided by "delta t" (elapsed time) |
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Term
| instantaneous velocity ("vector v") |
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Definition
| the velocity of an object at an instant of time |
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Term
| equation for instantaneous velocity |
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Definition
| "vector v" = the limit as "delta t" approaches 0 of "delta vector r" over "delta t" |
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Term
| average acceleration ("vector a bar") |
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Definition
| the change in velocity ("delta vector v") divided by elapsed time ("delta t") |
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Term
| instantaneous acceleration ("vector a") |
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Definition
| the limit as "delta t" approaches 0 or "delta vector v" divided by "delta t"; as elapsed time becomes infinitesimally small, the average acceleration becomes equal to instantaneous acceleration |
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Term
| What is the term "components" short for? |
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Definition
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Term
| Are x and y motions independent of each other? |
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Definition
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Term
| Can two-dimensional motion be thought of as two distinct one-dimensional motions (one for x and one for y)? |
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Definition
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Term
| What do symbols "x" and "y" denote? |
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Definition
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Term
| What does symbol "v" denote? |
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Definition
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Term
| What does symbol "a" denote? |
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Definition
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Term
| What does symbol "v knot" denote? |
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Definition
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Term
| What does symbol "t" denote? |
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Definition
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Term
| Under what assumption can a good description of projectile motion be obtained? |
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Definition
| the assumption that air resistance is absent |
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Term
| What are the implications for acceleration in the x and y directions under projectile motion? |
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Definition
ax = 0 m/s^2
ay = acceleration due to gravity |
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Term
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Definition
| the horizontal distance traveled between launching & landing, assuming the projectile returns to the same vertical level at which it was fired |
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Term
| In projectiles, in general, if the only acceleration is that due to gravity, the shape of the path can be shown to be a _____ |
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Definition
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Term
| Does the order of the subscripts of "vector v" matter when describing relative velocity? |
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Definition
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