Rest and Motion

Q.

One microsecond is equal to.. ... Second

Q. What is the SI unit of time?

1. hour
2. second
3. minute
4. millisecond

Q.

When the position of a body with respect to its surrounding/observer doesn’t change with time, the body is said to be in motion.

1. True

2. False

Q. When we are on a moving train, we see that our surrounding is moving. So who is at rest and who is in motion?

Q. Which is the least unit of time among the following?

1. 1 min
2. 1 s
3. 1 microsecond
4. 1 nanosecond

Q. If the distance-time graph is a straight line parallel to the time axis, then the body is said to be __.

1. in uniform motion
2. in non-uniform motion
3. at rest
4. in circular motion

Q.

What is difference between motion and relative motion

Q.

When a body starts moving from rest its initial velocity is zero.

1. True
2. False

Q. Given that P = Po cos (t/P - qx), where t represents time in second and x represents distance in meter. Which of the following statements is false? (1) P and Po have same unit (2) t/P have same unit as

Q.

Write the relationship between the different units of time.

Q. Two trains moving in the same direction with the same speed will be :

1. At rest with respect to each other.
2. In motion with respect to each other.
3. At rest with respect to an observer standing outside the train.
4. In motion with respect to an observer standing outside the train.

Q.

When do you call an object to be moving? [1 MARK]

Q. What does the slope of the distance-time graph represent?

Q.

A pen lying on the table is at___ with respect to its surroundings and ___ with respect to a person on the moon.

Q. If person A covers more distance in a given interval of time and person B covers less distance in the same interval of time, then which of the following is correct ?

1. A is faster than B.
2. B is faster than A.
3. A and B have same speeds.
4. A and B reach the destination at the same time.

Q. With the help of a distance-time graph, find out whether the motion by the object is uniform motion or non-uniform motion.

Q. A car moving on a straight road is an example of:

1. Rectilinear motion
2. Oscillatory motion
3. Periodic motion
4. Rotatory motion

Q.

Two cars A and B are moving side by side with a same speed. As both cars are changing their position, car A is in motion with respect to car B.

1. True

2. False

Q.

In which of the following case(s) we can say that the object is moving?

1. If the observer has to change his head position with time to see the object

2. If the object appears to move towards or away from observer

3. Can’t be said

4. Both A and B

Q.

A bench in a park is in a state of___________.

Q. A car travels at a speed of $40m{s}^{-1}$ for the first 2 seconds and $60m{s}^{-1}$ for the next 4 seconds. The distance travelled by the car is:

1. 240 m
2. 280 m
3. 320 m
4. 360 m

Q.

The defination of MOTION is as follows:-

"A body is said to be in motion if it's position changes with time with respect to its surroundings."

While we are traveling in a train we see the trees move according to our surroundings or our reference frame.So, are they really in motion?If no then why?If yes then how?

Q. SI unit of time is _____.

1. day
2. second
3. hour
4. minute

Q. What propagation of light defines its motion in a straight line?

1. Curvilinear
2. Elliptical
3. Circular
4. Rectilinear

Q. In which case will the ball be seen by the observer.

1. A
2. B
3. C
4. D

Q.

Can a motion in rest be also in a constant motion

Q.

A body is said to be at rest if it does not change its ___________ with respect to its surroundings.

Q. Draw a typical distance-time graph for uniform motion.

Q. What propagation of light defines its motion in a straight line?

1. Elliptical
2. Circular
3. Rectilinear
4. Curvilinear

Q. What propagation of light defines its motion in a straight line?

1. Rectilinear
2. Elliptical
3. Circular
4. Curvilinear