Motion A body is dropped from certain height from a uniformly ascending balloon.
The correct graph showing variation of velocity with time for body is :
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Motion The velocity of a bullet is reduced from 200 m/s to 100 m/s while travelling through a wooden block of thickness 10 cm. The retardation, assuming it to be uniform, will be
(1) 10 × 104
m/s2
(2) 1.2 x 104
m/s2
(3) 13.5 × 104 m/s2
(4) 15 x 104 m/s2
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Motion A particle is traveling with a constant speed. This means-
(1) Its position remains constant as time passes
(2) It covers equal distances in equal interval of time
(3) Its acceleration is zero
(4) It does not change its direction of motion
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Motion This is a velocity-time graph when the body is under:
(1) Non-uniform retardation.
(2) Uniform acceleration.
(3) Uniform retardation.
(4) Non-uniform acceleration.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Motion In which of the following graphs are both runners moving at the same speed?
(1)
Graph-C
(2)
Graph-A
(3)
Graph-D
(4)
Graph-B
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Motion If car A is at 80 km/h and car B is at 60 km/h in the same direction, what is
the velocity of thecar A relative to the car B?
(1)
40 km/h
(2)
20 km/h
(3)
10 km/h
(4)
30 km/h
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 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 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 To describe the motion of an object we first specify a
(1) The acceleration of the body
(2) Reference point
(3) The speed
(4) The direction of motion
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
