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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