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9TH GRADE PHYSICS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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9TH GRADE PHYSICS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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9TH GRADE PHYSICS QUESTIONS ANDANSWERS WITH SOLUTIONS 2024
motion - ANSWER An object's change in position relative to a reference point.
frame of reference - ANSWER A system for specifying the precise location of objects in space and time
displacement - ANSWER The change in position of an object
speed - ANSWER the distance traveled divided by the time interval during which the motion occured
velocity - ANSWER The speed of an object in a particular direction
acceleration - ANSWER a rate of change of velocity over time; an object accelerates if its speed direction
or both change
force - ANSWER an action exerted on a body in order to change the body's state of rest or motion; has
magnitude and direction
friction - ANSWER A force that opposes motion between two surfaces that are in contact
static friction - ANSWER The force that resists the initiation of sliding motion between two surfaces that
are in contact and at rest
kinetic friction - ANSWER the force that opposes the movement of two surfaces that are in contact and
are sliding over each other
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