What is frictional force? A. The force that makes objects fly. B. The force that helps objects move easily. C. The force that opposes the motion of an object when it slides or rolls over a surface. D. The force that makes objects disappear. ...
A force of 15.00 N to the right causes a 2.02 kg book to have a net acceleration of 0.81 m/s^2 to the right. What is the frictional force acting on the book? If you try to push an object that is 10 times heavier than you would there be static or kinetic friction? explain. ...
A. Gravitational force only B. Frictional force only C. Both gravitational and frictional forces D. No force 相关知识点: 试题来源: 解析 A。当球下落时,主要受到重力作用。摩擦力通常可以忽略不计,除非有特殊说明。选项 B 单独的摩擦力不对;选项 C 一般情况下只有重力;选项 D 不符合实际。反馈...
The frictional force acting on 1 kg block is View Solution Travelling 900 km by rail costs Rs 280. What would be the fare for a journey of 360 km when a person travels by the same class? View Solution When a person leaves his home for sightseeing by his car, the meter reads 12352...
Frictional force. Normal force. Force of Gravity. What are the types of force Class 8? In this article, we will look at different types of force class 8, and the electrostatic force definition for class 8. Contact Forces. ... Spring Force. ... ...
【单选题】What is the driving force that initiates a wind? (3.0分) A. Pressure gradient force B. Coriolis force / geostrophic force C. Frictional force D. Centrifugal force 相关知识点: 试题来源: 解析 Pressure gradient force 反馈 收藏 ...
Force is everywhere and it comes in a variety of sizes, directions, and type. We can define Force as the push or pull of an object. Learn Force definition, unit & types of Force with solved examples.
Contact Forcesinclude: frictional forces, buoyant forces, normal forces, and air resistance forces Action-at-a-distance forcesinclude: gravitation, electrostatic and magnetic forces. Measuring Force: Force is measured using either the English System of Measurements or theInternational System of Units (SI...
What is the name of the force that pulls objects towards the Earth? A. Magnetic force B. Electric force C. Gravitational force D. Frictional force 相关知识点: 试题来源: 解析 C。解析:使物体向地球下落的力是重力。文章中有关于力的介绍。选项 A 磁力不是使物体向地球下落的力。选项 B 电力与...
The frictional force of air resistance acts on the moving body. When a body moves, air resistance slows it down. Objects with inertia, mass and momentum: Inertia is the quality of an item that causes it to resist changes in its state of rest or motion. ...