Motion Which of the following is not characteristic of displacement ?
(1) It is always positive.
(2) It has both magnitude and direction.
(3) It can be zero.
(4) Its magnitude is less than or equal to the actual path length of the object.
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 Solution : -. |
Motion A body is moving along a straight line at 20 ms–1
undergoes an acceleration of 4 ms After 2 s, its speed will be-
(1) 8 ms–1
(2) 12 ms–1
(3) 16 ms–1
(4) 28 ms–1
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 4 Solution : -. |
Motion The velocity time graph of runner is given in the graph. What is the total
distance covered by the runner in 16s?
(1) 100 m
(2) 70 m
(3) 30 m
(4) 130 m
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 4 Solution : -. |
Motion The brakes applied to a car produce a negative acceleration of 6ms–2
If the car stops after 2 seconds, the initial velocity of the car is -
(1) 6 ms–1
(2) 12 ms–1
(3) 24 ms–1
(4) Zero
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 2 Solution : -. |
Motion The acceleration of an object moving in a straight line can be determined
from:
(1) The area between the distance-time graph and time axis.
(2) The area between the velocity-time graph and time axis
(3) The slope of the velocity-time graph.
(4) The slope of the distance-time graph.
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 3 Solution : -. |
Motion
The relation among v, w and r is -
(1) w = v / r
(2) v = w / r
(3) w = r / v
(4) None of these
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 Solution : -. |
Motion
A ball is thrown vertically upwards. Which of the following plot represents the velocity time graph of the ball during its flight, if the air resistance is not ignored ?
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 3 Solution : -. |
Motion
In the distance-time graph of a cyclist, what is happening between B-C and C-D?
(1)
B-C: cyclist is coming back to where he started, C-D: cyclist is stationary.
(2)
B-C: cyclist is stationary, C-D: cyclist is accelerating.
(3)
cyclist is stationary, C-D- speed is increasing
(4)
B-C: cyclist is stationary, C-D: cyclist is coming back to where he started.
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 4 Solution : -. |
Motion A body freely falling from rest has a velocity v after it falls through a height h. The distance it has to fall further for its velocity to become double is -
(1) 3 h
(2) 6 h
(3) 8 h
(4) 10 h
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 Solution : -. |