Chapter 1 -Units and Kinematics
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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length | m
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mass | kg
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Force | N
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E/Work | Joule
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Time | sec
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Power Watt |
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Angstrom | 10E-10m
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nm | 10^-9m
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1 eV (electron-volt) | 1.6E-19J
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Kilo | 10^3
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Mega | 10^6
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Giga | 10^9
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micro | -6
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pico | -12
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nano | -9
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when multiplying | multiply mantissa, add exponents
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when dividing | divide mantissa, subtract exponents
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Sin 0 | 0
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Cos 0 | 1
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Sin 30 | i/2
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Cos 30 | radical 3 over 2
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Sin 45 | radical 2 over 2
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Cos 45 | radical 2 over 2
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Sin 90 | 1
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Cos 90 | 0
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Sin 180 | 0
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Cos 180 | -1
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Sin 60 | radical 3 over 2
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Cos 60 | 1/2
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Scalars | magnitude but NO direction; speed, mass, E, distance
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Vector | magnitude AND direction; force, velocity, displacement, acceleration, momentum
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resultant | vector sum
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Tan theta = 1 | theta = 45 degrees
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Kinematics | branch of mechanics dealing with the description of motion
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instantaneous speed | magnitude of instantaneous velocity; scalar
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instantaneous velocity | refers to a single instant of time (specific time) ; vector
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Avg speed | distance/time
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Avg velocity | displacement/time
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Avg Acceleration | rate of change of an object's velocity so (delta velocity/delta time)
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instantaneous acceleration | acceleration at one point of a particle's path
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acceleration due to gravity | object in free-fall; 9.8m/s^2
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projectile motion | Vx is constant; a in x direction = 0
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Motion EQ | 1. v = v0 + at
2. x-x0 = v0t + (1/2)at^2
3. v^2 = v0^2 + 2a(x-x0)
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At max height | v = 0
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
vahajuddin
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