题目
单项选择题
Determine what will happen to the momentum of an object if the velocity is doubled and mass is halved. (K:1)
选项
A.a. It does not change
B.b. It becomes 4 times the original momentum
C.c. It becomes two times the original momentum
D.d. It becomes half of the original momentum
查看解析
标准答案
Please login to view
思路分析
The problem asks what happens to the momentum when velocity is doubled and mass is halved. Momentum is defined as p = m v, so we should compare the initial momentum to the final momentum after applying the changes.
Option a: 'It does not change' — Calculat......Login to view full explanation登录即可查看完整答案
我们收录了全球超50000道考试原题与详细解析,现在登录,立即获得答案。
类似问题
Which of the following represents the correct formula for momentum?
A 75-g ball strikes a wall horizontally at 12 m/s and rebounds in the opposite direction at 10 m/s. The ball’s change of momentum has magnitude
A ball of mass 3 kg, is dropped onto the ground. The velocity of the ball just before hitting the ground is 2.2 ms-1 and it bounces back up with 60 % of the magnitude of the downward velocity.Taking downward direction as positive, what is the change in momentum (kg m/s) of the ball immediately after bouncing back up again?
What is the speed (in km/h) of a table tennis ball of mass 2.9 g if it has momentum of 0.08 kg ms-1? Give your answer to the nearest whole number.
更多留学生实用工具
希望你的学习变得更简单
加入我们,立即解锁 海量真题 与 独家解析,让复习快人一步!