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What is momentum?
什么是动量？
What is the principle of conservation of momentum?
动量守恒原理是什么？
What is impulse?
冲量是什么？
Calculate the average force on an object in a
collision, given the time of the collision and
the change in momentum of the object.
计算碰撞中物体所受的平均力，已知碰撞时间及物体动量的变化。
How can you use an understanding of impulse
to reduce the force on you in any kind of collision?
如何利用对冲量的理解来减少碰撞中作用在你身上的力？
Given initial momenta of two objects, calculate
the velocity after they collide if the collision is
totally inelastic (i.e., they stick together).
已知两个物体的初始动量，计算它们发生完全非弹性碰撞（即碰撞后粘在一起）后共同的 velocity。
What is meant by the center of mass,
and what is its significance?
质心是什么意思，它的意义何在？
How do you find the center of mass of
a collection of point masses?
如何找到一组质点的质心？
How do you find the center of mass of
a continuous distribution of mass?
如何找到连续质量分布的质心？
What constraint does the conservation
of momentum put on the particles involved
in a collision?
动量守恒对碰撞中涉及的粒子施加了什么限制？
What is an elastic collision? What additional
constraint acts in an elastic collision?
什么是弹性碰撞？弹性碰撞中还存在什么额外的约束条件？
Describe the velocities after a head-on elastic
collision between equal masses where the
target mass is at rest before the collision.
描述两个等质量物体发生正碰弹性碰撞后速度的变化，其中目标物体在碰撞前静止。
Describe the same kind of collision if the
target mass is very massive compared to the
projectile. .. if the target mass is very small
compared to the projectile.
如果目标质量远大于弹丸的质量，描述同一种碰撞；如果目标质量远小于弹丸的质量，描述同一种碰撞。
Homework set#8
第八次作业 |