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20 Cards in this Set
- Front
- Back
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What are the steps of the Scientific Method? |
1. Observations 2. Research 3. Problem 4. Hypothesis 5. Experiment- Controls, IV, DV, Constants 6. Data 7. Analyze Data 8. Conclusion |
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What is mechanics? |
The study of the motion of objects |
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What is kinematics? |
The science of describing the motion of objects using words, diagrams, numbers, graphs, and equations |
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What is a scalar? |
The quantities that are fully described by a magnitude (or numerical value). -distance |
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What is vector? |
The quantities that are fully described by both a magnitude and a direction. -displacement |
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What is speed? |
The quantity of a scalar, the rate at which an object covers a distance. |
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What is velocity? |
The quantity of a vector, the rate at which an object changes its position. |
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What is acceleration? |
A vector quantity, the rate at which an object changes its velocity. -depends if object is speeding up or slowing down or if moving + or - direction |
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What is spring force? |
Force exerted by a compressed or stretched spring upon any object that is attached to it |
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What is tension force? |
Force transmitted through a string, rope, cable, or wire. |
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What is buoyancy? |
friction in a liquid that allows an object to float |
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What is static friction? |
results when the surface of 2 objects are resting on one another |
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Skydiver accelerates from 20 m/s to 40 m/s in 2 seconds. What is the skydiver's average acceleration? |
A= Vf-Vi/t A= 40 m/s - 20 m/s /2s = 20 m/s /2s A= 10 m/s2 |
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Go kart accelerates from 4 m/s to 22 m/s in 3 seconds. What is the Go kart's average acceleration?
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A= Vf-Vi/t
A= 22 m/s - 4 m/s /2s = 18 m/s /3s A= 6 m/s2 |
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Lisa traveled a total distance of 440 miles. Her trip took 8 hours. What was her average speed? |
V= d/t V= 440 mi/ 8hr V= 55 mi/hr |
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Matt traveled a total distance of 100 miles to the city. It took him 5 hours to get there. What was the average speed? |
V= d/t
V= 100 mi/ 5hr V= 20 mi/hr |
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What is the force net of 2kg and 5 m/s? |
F net= m/a F net= 2kg/ 5m/s F net= 10N |
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What is the force net of 7kg and 10 m/s? |
F net= m/a F net= 7kg/ 10m/s F net= 70N |
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What causes doubling of the net force? |
doubling of the acceleration and halving of the net force results in a halving of the acceleration |
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What causes doubling of the mass? |
halving of the acceleration and halving the mass results in a doubling of acceleration |
