1.
amount of exercise; level of physical activity
The quantity or intensity of physical exercise a person engages in.
運動量が足りない。
I'm not getting enough exercise.
毎日の運動量を増やすことにした。
I decided to increase my daily amount of exercise.
医者に運動量を減らすように言われたが、なかなか難しい。
The doctor told me to reduce my level of physical activity, but it's not easy.
2.
momentum
In physics, the product of an object's mass and velocity.
運動量は質量と速度の積だ。
Momentum is the product of mass and velocity.
運動量保存の法則は物理の基本だ。
The law of conservation of momentum is fundamental to physics.
衝突の前後で運動量の総和は変わらない。
The total momentum does not change before and after a collision.
A compound of 運動 (exercise; motion) and 量 (quantity, amount). In everyday conversation, sense 1 (amount of exercise) is far more common. The physics sense (momentum) is used in academic and technical contexts.
COMMON COLLOCATIONS:
- 運動量が多い: a lot of exercise
- 運動量が少ない: little exercise
- 運動量を増やす: to increase physical activity
- 運動量を減らす: to reduce physical activity
- 一日の運動量: daily amount of exercise
- 運動量保存の法則: law of conservation of momentum
SIMILAR WORDS:
- 運動: exercise, physical activity — the activity itself, not the quantity
- 活動量: amount of activity — broader than exercise, includes all physical activity