Momentum



GRE 蓝宝 Barron 考研

解释

GRE 红宝书

• n. 推进力, 势头
• ［英］ n. 推进力, 势头 ( force or speed of movement, impetus)
• ［类］ oscillation: swing / momentum : scooter ( 秋千通过震荡摇摆 / 滑行车通过冲力运动)
• ［记］ moment ( =movement) +um -> 动力

Webster Collegiate

noun (plural momenta or momentums)

• Etymology: New Latin, from Latin, movement
• Date: 1610
• 1. a property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity; broadly a property of a moving body that determines the length of time required to bring it to rest when under the action of a constant force or moment
• 2. strength or force gained by motion or through the development of events ; impetus <the campaign gained momentum>

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