Which of the following statements are correct-1- A particle is known to be at rest if it does not change its position with time-2- The concept of motion is invalid without a reference point-3- Speed - Distance - Time taken

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Standard VII

Physics

Motion

Which of the ...

Question

Which of the following statements are correct?

1, 2

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2, 3

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1, 2, and 3

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1, 3

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Solution

The correct option is A 1, 2
Statement 1 is correct because when a body is at rest, it does not change its position with time.
Statement 2 is correct. To define motion, we need to define the reference point.
Statement 3 is incorrect because $Speed = \frac{Distance}{Time taken}$

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Similar questions

Which of the following statements are correct?
i. A particle is known to be at rest if it does not change its position with time.
ii. In any journey, the numerical value of displacement $\leq$ distance
iii. Distance covered by an object is the sum of speed of the object and the time taken to travel the distance.

Q. Which of the following statements are correct ?
A. A particle is known to be at rest at time t = 0, if the body does not change its position with time.
B. In a journey, numerical value of displacement

\leq

distance

A body is said to be at rest, if it does not change its position with respect to the reference point.

A car is at rest at a distance of $2 m$ from a tree. If the position of the car does not change with time, the car can be said to be in motion with respect to the tree.

Q. State whether given statement is True or False.
A body is said to be at rest if it does not change its position with respect to the reference point.

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Which of the following statements are correct?

The correct option is A 1, 2Statement 1 is correct because when a body is at rest, it does not change its position with time. Statement 2 is correct. To define motion, we need to define the reference point. Statement 3 is incorrect because Speed=DistanceTime taken

The correct option is A 1, 2
Statement 1 is correct because when a body is at rest, it does not change its position with time.
Statement 2 is correct. To define motion, we need to define the reference point.
Statement 3 is incorrect because $Speed = \frac{Distance}{Time taken}$