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| Q. | The dimension of which of the following is the same as that of impulse? | 
| A. | Volume | 
| B. | Momentum | 
| C. | Torque | 
| D. | Change in the rate of momentum | 
| Answer» B. Momentum | |
| Explanation: The quantity of impulse is force x time interval. In classical mechanics, linear momentum or translational momentum is the product of the mass and velocity of an object. For example, a heavy truck moving fast has a large momentum—it takes a large and prolonged force to get the truck up to this speed, and it takes a large and prolonged force to bring it to a stop afterwards. If the truck were lighter or moving slower, then it would have less momentum. | |
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