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Doom.
Meh, benchmarks.
| Question | Answer |
|---|---|
| Friction works in the ______ direction of motion. | Opposite |
| An object in motion will _________ unless acted upon by an unbalanced force. | Stay in motion |
| Balanced forces acting on an object cause no change in velocity or a change in velocity? | No change in velocity |
| What force acts in the opposite direction of gravity? | Air resistance |
| What is the average speed of a book that falls off a 3 foot tall desk in 1.5 seconds? | 2 ft/s |
| A change in position with respect to a reference point is called...? | Motion |
| How far would you travel if you walked at a rate of 3 miles/hour for 2 hours? | 6 miles |
| When forces are acting on an object in OPPOSITE directions, how do you determine the net force? How do you determine which direction? | You subtract the strengths of the individual forces. |
| When forces are acting on an object in the SAME direction how do you calculate the net force? | You add the strengths of the individual forces. |
| You do not know an object's velocity until you know its _____ and _____ . | Speed and velocity |
| How much time is required for a bicycle to travel a distance of 100 m at an average speed of 2 m/s? | 50 s |
| Force = Mass x Acceleration, so if the mass increases what happens to the acceleration? If the mass decreases what happens to the acceleration? | Mass increases, acceleration decreases: mass decreases, acceleration increases. |
| A curvy ling on a graph shows... | Acceleration |
| A diagonal line on a graph shows... | Constant speed |
| A pause in the line on a graph, where it runs straight for a while, shows... | The distance isn't changing |
| You can calculate the average speed of an object by ______ .... | Total distance divided by total time |
| An object at rest will ___________ unless acted on by an unbalanced force. | Stay at rest |
| Forces can be considered the same if they have the same magnitude and act in the same _________. | Direction |
| A falling raindrop increases its velocity from 10 m/s to 30 m/s in 2 seconds. That is this an example of? | Acceleration |
| A force is described as the product of an object's ____________ and __________. | Mass and Acceleration |
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Ixalel
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