| 1 |
The action and reaction never act on |
- A. Same body
- B. Two bodies
- C. many bodies
- D. All of these
|
| 2 |
Rate of change of displacement is called |
- A. Speed
- B. Velocity
- C. Kinetic energy
- D. None of these
|
| 3 |
A typical rocket consumes fuel about |
- A. 40000 Kgs-1
- B. 30000 Kgs-1
- C. 20000 Kg s-1
- D. 10000 Kgs-1
|
| 4 |
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
|
| 5 |
Unit of acceleration is |
- A. ms-1
- B. ms
- C. ms-2
- D. m2s
|
| 6 |
A ball is thrown up with 20 ms-1 at an angle of 60 <sup>o</sup>with x-axis , the velocity of the ball at the top position is. |
- A. 0 ms-1
- B. 10 ms-1
- C. 20 ms-1
- D. 16 ms-1
|
| 7 |
When average velocity becomes equal to instantaneous than body is called moving with. |
- A. Instantaneous acceleration
- B. Constant acceleration
- C. Constant velocity
- D. Variable velocity
|
| 8 |
The shape of trajectory of short range projectile is |
- A. Straight line
- B. Circle
- C. Elliptical
- D. Parabolic
|
| 9 |
A man of 5000 kg moves with an acceralation of 1 ms-2 force acting on it is. |
- A. 5 N
- B. 500 N
- C. 50 N
- D. 5000 N
|
| 10 |
Total change in momentum of an isolated system is |
- A. Always (+) ve
- B. Always (-) ve
- C. Has maximum value
- D. Zero
|