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aleah medlin
7th grade chapter 16 section1, 2, 3
Question | Answer |
---|---|
what kind of motions does acceleration refer to? | increaseing and decreaseing speed, or cahnging directions. |
how is acceleration calculated? | to determine the acceleration of an object moving in a straight line, you must calculate the changing in speed per unit of time. |
what graphes can be used to analyze the motion of an accelerating of object? | acceleration = final speed - initail speed over time. |
what is object in motion? | an object is in motion if it changes position relative to a refernce point. |
how do you know the an object's speed and velocity? | if you know the distance an object travels in a certain amount of time, you can calculate the speed of the church object. |
ahow can you graph motion? | speed=distance over time |
how does the theory of plates tctonics explains the movement of earths land masses? | according to the theory of plates tectonics. earths landmasses have changed position over time because they are part of the plates that are slowly moving. |
how fast does the earth's plates move? | some plates move at a rate of several centimeters each year other move only a few millimeters per year |