In physics, work is done when a force acts on an object and causes a ___ in its position. A. movement B. shift C. change D. displacement 相关知识点: 试题来源: 解析 D。“displacement(位移)”在物理中是指位置的变化。选项 A“movement(运动)”比较宽泛,选项 B“shift(转移)”不太准确,...
A force acts on the object.After a time, the object is moving at -4.0m/s.The mass of the object is 5.0kg.What is the change in momentum of the body?A A -35kgm/s B -5.0kgm/s C +5.0kgm/s D +35kgm/s 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
A force acts on a 2kg mass and gives it an acceleration of 3 m/s^2. what acceleration is produced by the same force when acting on a mass of (1) 1kg? (2) 4kg? (3) how large is the force? An object with a weight of 600 \ N i...
A force of 10 N acts on a body of mass 0.5 kg for 0.25s starting from rest.What is its momentum now? View Solution A force acting on an object of mass 500 g changes its speed from 200 cm/s to 0.2 m/s. The change in momentum is ...
& image solution for A constant force acts on object of mass 5 kg for a duration of 2s It increases the object's velocity from 3m/s to 7m/s Find the magnitude of the applied force. Now if the force were applied for a duration of 5s what would be the final velocity of object?
8kg mass moving with a speed of 30 of 30ms-1 is brought to rest in 2.5sec, calculate the magnitude of the constant retarding force A force of 7.36 N acts on a(n) 2.1 kg object for 24.7 s. (a) What is the obje...
结果1 题目 12 A force of 25N acts on an object. The work done by the force is 400J.How far does the object move in the direction of the force?C A 6.3cm B 16cm C 16m D. 10km 相关知识点: 试题来源: 解析 C 反馈 收藏 ...
12 A 30 N force acts on a 1 kg mass and 2 kg mass on a frictionless surface as shown.T1kg2 kg30N What is the size of tension T and the resultant force on the 1kg mass?C T/N resultant force on 1kg mass/ N A A2010202010101020 相关知识点: 试题来源: 解析 C 反馈 收藏 ...
3.Determine whether the inertia of an object changes as the object's velocity changes.4.Explain why an object with a smaller mass has a larger acceleration than an object with a larger mass if the same force acts on each.5.You push a book across a table.The book moves at a constant ...
<p>To solve the problem, we will use the relationship between force, change in momentum, and time. According to Newton's second law, the force acting on an object is equal to the rate of change of momentum of that object.</p><p>1. <strong>Identify the gi