Class IX- Motion

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Class IX- Motion

PART 2

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1. Two planes changed their position with time as shown in the figure. The distance between the two planes remained the same throughout the time. Choose the correct statement(s). Statement I: Both the planes are at rest with respect to each- other throughout the time Statement II: Both the planes have travelled without any- change in their relative position *

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Only I

Only II

Both I and II

None

2. Which of the following is/are example/s of uniform motion? I- A ball falling towards the ground. II- A ball thrown up from the ground *

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Only I

Only II

Both I and II

Neither I nor II

3. A particle is travelling with a constant speed. This means *

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Its position remains constant with time

it covers equal distance in equal interval of time.

its acceleration is zero

it does not change its direction of motion.

4.The area under a graph between two quantities is given in the unit m⋅s−2.The quantities are *

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speed and time

distance and time

acceleration and time

velocity and time

5. The area under a graph between two quantities is given in the unit m/s.The quantities are *

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speed and time

distance and time

acceleration and time

velocity and time

6. The velocity-time graph of a particle is not a straight line. Its acceleration is - *

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zero

constant

negative

variable

7. Which of the bodies have more acceleration ? *

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