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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 | |
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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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