Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
If the distance covered is zero, the displacement-
may or may not be zero
cannot be zero
depends on the time taken
must be zero
A girl travels 6m towards east and then 8 m towards north. Her displacement is:
7 m
10 m
14 m
2 m
Which of the following is true for displacement?
It cannot be zero
Its magnitude is greater than the distance travelled by the object
It may or may not be equal to the distance
None of the above
The displacement-time graph for a body is parallel to the x-axis. What can be concluded from this statement?
The body is under uniform motion
The body is stationary
The body is moving along a curved path
The body has varying speed
What would you call the area under the curve of a velocity-time graph included between itself and two time ordinates?
Speed
Displacement
Velocity
Acceleration
A person claps his hands near a high tower and hears echo after 0·2 s. The speed of the sound is 300 ms–1. The distance of the tower from the person is
30 m
15 m
6 m
3 m
A bus is travelling with a speed of 72 km/h. What will be its speed in m/s?
15 m/s
10 m/s
25 m/s
20 m/s
A car moves from A to B with a constant speed of 'u' and from B to A with a constant speed of 'v'. What is the average speed of the car
u+v/2
√uv
2uv/u+v
_______ is defined as the ratio of total path length traveled by an object and the total time interval during which the motion has taken place.
Instantaneous acceleration
Instantaneous velocity
Average speed
Uniform acceleration
A ball is dropped under gravity. What will be its speed after 5 second? (given g = 10 m/s2)
15 m/s
50 m/s
A particle moving along a straight line travels 100 m in the 10th second and 200 m in the 20th second. Find the distance travelled by it in 30 seconds.
4650 m
3000 m
2000 m
2800 m
When a motion is described as relative, what does it mean?
It means that motion is independent of the frame of reference.
It means that motion depends on the frame of reference selected.
It means that motion of any object is described relative to the motion of Earth.
All of the above are correct answers.
A car is moving on road, and rain is falling vertically, select the correct answer.
The rain will strike the wind screen only
The rain will strike the front screen only
The rain will strike the both screen
The rain will not strike any screen
A boat A is moving towards the north with a velocity of 100 km/hr and boat B is moving towards the south with a velocity of 50 km/hr such that both are moving towards each other, what will be the velocity of boat A with respect to an observer in boat B?
(Consider boat is moving on still water)
50 km/hr
100 km/hr
150 km/hr
What is the Relative velocity?
It is the velocity with which an bird flies
It the velocity with which a body moves in a circular motion
It is the velocity of an object wrt to the velocity of another object
It is the acceleration of the body that moves
