motion(1)
TRANSCRIPT
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Motion
Speed, Velocity, and Acceleration
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Frames of Reference The object or point from which
movement is determined Movement is relative to an object
that appears stationary Earth is the most common frame
of reference
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Motion Motion is a change in position
relative to a frame of reference Speed is the distance traveled
in a given amount of time Speed=distance time
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Speed
The units for speed: meters/second (m/sec) kilometers/hour (km/hr) Speed that does not change
is constant speed
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Average speed
Total distance divided by the total time
Formula: Total distance total time
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Velocity Speed in a given direction Velocities in the same direction
combine by adding Velocities in different
directions combine by subtracting
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Interesting fact
Rockets are launched in the same direction of the earth’s rotation to get an extra boost of 1800 km/hr to its speed
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Acceleration The change in velocity Acceleration is measured in
m/sec/sec or m/sec2
Formula is: (final velocity - original
velocity)/time
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Deceleration vs. Acceleration A decrease in velocity is
deceleration or negative acceleration
A distance-time graph for acceleration is always a curve
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Centripetal Acceleration
Acceleration directed toward the center of circular path
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Momentum Momentum is equal to the mass of an object times its velocity
momentum= mass x velocity
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Conserving Momentum The law of conservation of momentum states that the total momentum is NOT lost, only transferred
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THANK YOU
SUBMITTED BY:- RITIK SHARMA CLASS-9th-D ROLL NO-7