Motion The following position-time graph of an object shows that the body
(1)
No such inference can be made from the graph.
(2)
Has non-uniform motion.
(3)
Has uniform motion.
(4)
Is at rest.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Motion A body is moving with uniform velocity of 10 ms–1
The velocity of the body after 10 s is -
(1) 100 ms–1
(2) 50 ms–1
(3) 10 ms–1
(4) 5 ms–1
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Motion Which sentence best describes the athlete whose distance-time graph is shown below?
(1)
The athlete ran forward for 3 seconds, and then he ran backward for 3 more
seconds.
(2)
The athlete ran forward for 3 seconds, and then he stood still for 3 more
seconds.
(3)
The athlete ran forward for 3 seconds, and then he ran forward for 3 more
seconds but with
a lower speed.
(4)
The athlete ran forward for 3 seconds, and then he moved forward for 3 more
seconds with a greater
speed.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Motion Pick the false statement
(1) One can calculate uniform acceleration
(2) One can calculate non uniform acceleration from velocity-time graph.
(3) One can calculate velocity from distance-time graph.
(4) One can calculate speed from distance-time graph.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Motion Distance covered by a body from velocity-time graph is
(1)
Equal to the slope of the graph.
(2)
Area under the graph .
(3)
Is de note d by a line parallel to the time axis at any point on the distance
axis.
(4)
Is denoted by a line parallel to the distance axis at any point on the time axis
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Motion What is true about scalar quantities ?
(1) Scalars quantities have direction also.
(2) Scalars can be added arithmetically.
(3) There are special laws for scalar addition.
(4) Scalars have special method to represent.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Motion The displacement-time graph for a body is given below. State whether the
velocity and acceleration of the body in the region DE are positive , negative
or Zero.
(1)
V= +v e but a=0
(2)
V = -ve and a = -ve
(3)
V = + ve and a = + ve
(4)
V = +ve and a = -ve
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Motion A stone is dropped from the top of a tower. Its velocity after it has fallen
20 m is (take g = 10m/s2)
(1) –10 m/s (2) 10 m/s (3) – 20 m/s (4) 20 m/s
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Motion
The figure above shows distance-time graphs of two objects X and Y. Which object
is mov ing
with greater speed?
(1)
Both objects are at rest
(2)
Both objects are moving with same speed
(3)
Object Y
(4)
Object X
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
