momentum

n. 势头；[物] 动量；动力；冲力

中文词源

momentum 动力，势头

来自拉丁语momentum,运动，变化，冲击，词源同moment,move.

momentum (n.): 1690s, scientific use in mechanics, "quantity of motion of a moving body," from Latin momentum "movement, moving power" (see moment). Figurative use dates from 1782.

1. 动量表示为物体的质量和速度的乘积，因此动量是每个瞬间时间点的瞬间状态量。所以它名称是：moment => momentum.2. 动量(momentum)与冲量(impulse)的区别：动量是状态量，冲量是一个过程量。

1. Demands for his dismissal have gathered momentum in recent weeks.: 最近几周，要求将他解职的呼声越来越高。

4. The historical tide is surging forward with great momentum.: 历史洪流气势磅礴,奔腾向前.