Rest and Motion

Q.

Give an example where object is at rest and also in motion at the same time

Q.

If three trains are moving at the same speed,

then which of the following is correct?

1. Train $A$ and train $B$ are at rest with respect to each other, but are in motion with respect to train $C$.
2. Train $A$ and train $C$ are at rest with respect to each other, but are in motion with respect to train $B$.
3. Trains $A$, $B$ and $C$ are at rest with respect to each other.
4. Train $B$ and train $C$ are at rest with respect to each other, but are in motion with respect to train $A$.

Q.

Write the difference between rest and motion.

Q.

What is the natural state of objects.

Q.

A train travels for $30$ minutes with a velocity of $54km/h$ and then for $120$ minutes with a velocity of $72km/h$ in the same direction. Calculate the average velocity of the train.

1. $15m/s$
2. $16m/s$
3. $19m/s$
4. $17m/s$

Q.

Explain how motion is relative term.

Q.

A train travels for $30$ minutes with a velocity of $54km/h$ and then for $120$ minutes with a velocity of $72km/h$ in the same direction. Calculate the average velocity of the train.

1. $15m/s$
2. $16m/s$
3. $19m/s$
4. $17m/s$

Q.

What is reset and motion?

Q.

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

1. True

2. False

Q. If you have to move your head while looking at an object, it is in motion.

1. True
2. False

Q. 1) A stone is falling freely from rest and the total distance covered by it in the last second of its motion equals the distance covered by it in the first 3 seconds of its motion. How long does the stone remain in air?

Q.

Which of the following statement(s) about motion is/are true?

1. Motion of an object is only relative to the position of another object.

2. Change in motion is the result of an applied force.

3. Motion is change of location or position of an object with respect to time.

4. All of these

Q. How can a body be simultaneously at rest and in motion?

Q. Complete the following sentence using the suitable option(s).
Motion of an object is __________.

1. relative to the position of another object
2. meaningless without a frame of reference
3. independent of the frame of reference
4. the change in the position of the object with respect to a reference point

Q. When an object doesn't change its position with respect to its surroundings and time, it is said to be at rest.

1. True
2. False

Q. Match the following terms:

1. Vector quantity
2. Reference frame
3. Actual length

Q. Differentiate between Rest and Motion.

Q. Which of the following is the common characteristic of all the moving bodies?

1. They change their position with time.
2. They always travel with uniform speed.
3. They always travel with varying speed.
4. They do not change their position with time.

Q. Which of the following situation(s) can be considered to be at rest for an observer travelling in a moving car?

1. Birds flying at the same speed in the same direction as that of the moving car.
2. Children crossing the road in front of the moving car.
3. Trees planted on the sides of the road.
4. A cat sleeping in the same car.

Q. When an object doesn't change its position with respect to its surroundings and time, it is said to be at rest.

1. True
2. False

Q. A person sitting in a speeding train is at rest with respect to -

1. trees
2. fields
3. buildings
4. other passengers

Q. Which of the following situation(s) can be considered to be at rest for an observer travelling in a moving car?

1. Birds flying at the same speed in the same direction as that of the moving car.
2. Children crossing the road in front of the moving car.
3. Trees planted on the sides of the road.
4. A cat sleeping in the same car.

Q. A person driving a car is in a state of rest with respect to -

1. a hospital
2. a post box on the roadside
3. the roof of the car
4. a hoarding on the road

Q.

A train travels for $30$ minutes with a velocity of $54km/h$ and then for $120$ minutes with a velocity of $72km/h$ in the same direction. Calculate the average velocity of the train.

1. $15m/s$
2. $16m/s$
3. $19m/s$
4. $17m/s$

Q. Which of the following statements is(are) true regarding rest and motion of an object?

1. Rest is relative term.
2. Rest is absolute term
3. motion is relative term
4. motion is absolute term.

Q.

When is an object said to be at rest?