
motion C9
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Science
9th Grade
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is motion?
A body is said to be in motion when its position changes with time with respect to a reference point.
A body is in motion when it remains stationary relative to a reference point.
Motion is the process of an object being at rest.
Motion occurs only when an object travels in a straight line.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Formula for speed in circular motion?
v = 2πr/t, where r = radius and t = time.
v = πr^2/t, where r = radius and t = time.
v = 2r/t, where r = radius and t = time.
v = 4πr/t, where r = radius and t = time.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is rest?
A body is said to be at rest when it does not change its position with time.
A body is at rest when it is in motion.
A body is at rest when it is experiencing acceleration.
A body is at rest when it is stationary but can move.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How to calculate acceleration from velocity-time graph?
Area under the velocity-time graph
Slope of velocity-time graph
Average of velocity values
Difference between initial and final velocities
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Is speed a scalar or vector?
Scalar
Vector
Both scalar and vector
Neither scalar nor vector
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Can average velocity be zero if distance is not zero?
Yes, if the displacement is zero (e.g., round trip).
No, average velocity is always equal to distance divided by time.
Yes, but only if the speed is constant.
No, average velocity cannot be zero if distance is not zero.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is instantaneous speed?
Speed of an object at a particular instant of time.
Average speed over a period of time.
Speed calculated using distance and time.
Speed that varies with time.
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