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16 Cards in this Set
- Front
- Back
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An object is said to be in __ if its distance from another object is changing |
Motion |
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When you say an object is in motion you are comparing it to a ___ |
Reference point |
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____ of an object is the distance it travels per unit of time |
Speed |
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What it the equation for calculating speed? |
Divide distance by the time |
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A person runs 50m in a time if 2 seconds |
25m per second |
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___ is speed with a given direction |
Velocity |
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You are swimming 3m/sec East and the current is moving 4m/sec East |
7m/sec East |
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___is the rate at which velocity changes |
Acceleration |
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You accelerate whenever you change your ___ or ___ |
Direction, speed |
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____is negative acceleration |
Deceleration |
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What is the equation for calculating accelerattion |
Final velocity=initial velocity divided by time |
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A car speeds up from 5mi/hr to 25mi/hr in a time of 4 seconds |
5mi/hr |
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Objects in motion have ____energy |
Kinetic |
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How much energy moving objects have depends on their ___ and ___ |
Mass, and speed |
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Energy of position shape is known as ___space |
Potential |
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What two things combine to make gravitational potential energy? |
Weight and height |
