| 1 |
the acceleration along x -axis direction in case of projectile is. |
- A. Zero
- B. Equal to gravity
- C. Maximum
- D. Constant
|
| 2 |
The acceleration of a projectile along x axis is. |
- A. Zero
- B. Increase
- C. Decrease
- D. Equal to 'g'
|
| 3 |
when a ball is throng straight up, the acceleration at its highest point is. |
- A. Upward
- B. Down ward
- C. Zero
- D. Horizontal
|
| 4 |
The dimensional unit of impulse is. |
- A. [MLT]
- B. [MLT-1]
- C. [ML-1T-1]
- D. [M-1L-1T-1]
|
| 5 |
A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be. |
- A. 10 kgms-1
- B. 50 kg ms-1
- C. 2 kg ms-1
- D. 20 kg ms-1
|
| 6 |
A typical rocket consumes fuel about |
- A. 40000 Kgs-1
- B. 30000 Kgs-1
- C. 20000 Kg s-1
- D. 10000 Kgs-1
|
| 7 |
The velocity of a free falling body just before Hattin the ground is 9.8 ms-1, the height through which is fall be |
- A. 98 m
- B. 19.6 m
- C. 4.9 m
- D. 9.8 m
|
| 8 |
For a rocket , the change in momentum per second of the ejecting gases is equal. |
- A. Acceleration of the rocket
- B. Momentum of rocket
- C. Velocity of rocket
- D. Thrust acting on rocket
|
| 9 |
The area between velocity time graph and the time axis is numerically equal to. |
- A. ?Speed of object
- B. Distance covered by the object
- C. Average velocity of the object
- D. Acceleration of the object.
|
| 10 |
At what speed the momentum and kinetic energy of a body having the same. |
- A. 1 ms-1
- B. 2 ms-1
- C. 4 ms-1
- D. 8 ms-1
|