Displacement

Q.

An object has moved through the distance . can it have zero displacement? If 'yes' support your answer with an example ?

Q. Which of the following is true for displacement?

1. It can not be zero if an object has travelled some distance.
2. Its magnitude is always equal or greater than the distance travelled by an object.
3. It is a scalar quantity.
4. Its magnitude is equal to or less than the distance travelled by an object.

Q.

If the displacement of a particle is zero, then what can you say about the distance covered by it?

1. It is negative

2. It must be zero

3. It may or may not be zero

4. It cannot be zero

Q. Which of the following option is incorrect?

1. Displacement can be equal to distance.
2. Displacement can never be greater than distance.
3. Zero displacement always means that the body is at rest.
4. Displacement is the shortest path between two points.

Q. Question 3
Which of the following is true for displacement?
(a) It cannot be zero.
(b) Its magnitude is greater than the distance travelled by the object

Q.

A person pushes a box on a rough horizontal platform surface. He applies a force of $200N$ over a distance of $15m$. Thereafter, he gets progressively tired and his applied force reduces linearly with distance to $100N$. The total distance through which the box has been moved is $30m$. What is the work done by the person during the total movement of the box ?

1. $5690J$

2. $5250J$

3. $2780J$

4. $3280J$

Q.

A particle is moving in a circle of diameter 20m. What is its distance and as per the table
given below

Q.

An ant travels along a right angled triangle $△$ PQR first from P to R, then from R to Q. Find the displacement and distance travelled by the ant?
Given, PR = $13m$, RQ = $12m$

1. Displacement = $25m$
   Distance = $25m$
2. Displacement = $25m$
   Distance = $5m$
3. Displacement = $5m$
   Distance = $25m$
4. Displacement = $5m$
   Distance =$5m$

Q.

Displacement is always less than or equal to the distance travelled.

1. True

2. False

Q.

The minute hand of a clock is 14 cm long. find the displacement and distance covered by it from 11:00 a.m. to 11:30 a.m.

Q.

Give two examples to explain that motion is relative

Q.

When is work said to be done against the force of gravity?

Q. An object can have zero average velocity but cannot have zero average speed. Justify.

Q.

The displacement is always greater than or equal to distance.

1. True

2. False

Q.

Is distance can be zero?

Q. Which of the following statement(s) is/are true about the displacement of an object?

1. It can be zero.
2. It can be greater than the distance travelled by the object.
3. It is a scalar quantity.
4. It is always less than or equal to the distance travelled by the object.

Q.

Distance is a (1) ____ quantity and displacement is a (2) ____ quantity.

1. (1) scalar

   (2) vector

2. (1) vector

   (2) scalar

3. (1) scalar

   (2) scalar

4. (1) vector

   (2) vector

Q.

The average speed of a moving body can never be zero but the average velocity of a moving body can be zero. Justify.

Q.

The displacement of a moving object in a given interval of time is zero. Would the distance travelled by the object also be zero? Justify your answer.

Q.

What is the work done against gravity when a body is moved horizontally along a frictionless surface ?

Q. The SI unit for both distance and displacement is metre.

1. False
2. True

Q.

What is Distance

Q. The displacement of a body can be both positive and negative.

1. True
2. False

Q.

The change of position of a particle along a fixed direction is called----------------

Q. Calculate the distance and displacement of a car when it completes three rounds of a circular track of Diamete 7m.

Q. What is the difference between these two cases:
(Please explain me in simple words)

1) Average velocity = Total Displacement / Total time

2) Average velocity = (Initial velocity + Final velocity) / 2
= [(u+v)/2]
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Q. Aruna runs along the path ABCDEFG. What is the total path length covered by her during motion A to G? What is her displacement?

Q. When a moving object comes back to its initial position, which of the quantities become zero?

1. Average speed
2. Average velocity
3. Distance
4. Displacement

Q. The moon revolves around the Earth in a circular path under the action of gravitational force. What can you conclude about the net work done by gravity in this case?

Q. Question 3
Which of the following is true for displacement?
(a) It cannot be zero.
(b) Its magnitude is greater than the distance travelled by the object