题目 A boy caught a ball of mass 200g moving with a speed of 30 m/s. If the catching process be completed in 0.1 s, the average net force of impact exerted by the ball on the hands of the boy is A 30N B 20N C 40N D 60N 相关知识点: 试题来源: 解析 D 反馈 收藏 ...
8. A small ball A of mass 3m is moving with speed u in a straight line on a smooth horizontal table. The ball collides directly with another small ball B of mass m moving with speed u towards A along the same straight line. The coefficient of restitution between A and B is. The ...
题目A ball of mass M moving with velocity V0 on a frictionless plane strikes the first of two identical balls, each of mass m=2kg, connected by a massless spring with spring constant k=1kg/s2(see Figure). Consider the collision to be central and elastic and essentially instantaneous.Mkmm0...
A ball of mass m is dropped from a height H. When it hits the ground, it rebounds to a height h. If the time of contact with the ground is t, and the average force exerted by the ground on the ball during the collision is F. Which of the following equations is correct accor...
Step by step video, text & image solution for A particle of mass m moving in the x direction with speed 2v is hit by another particle of mass 2m moving in they y direction with speed v. If the collision is perfectly inelastic, the percentage loss in the energy during the collision is...
A ball of mass m falls from a height h to the surface of the Earth.Which one of the following is correct?(assume that h is much smaller than the radius of the Earth)A) If we choose our system to be ball+Earth then the work done on the system is mgh.B) If we choose our s...
What was the velocity of the 1.0 kg block before the collision? View Solution A ball of mass m moving at a speed v makes a head on inelastic collision with an identical ball at rest. The kinetic energy of the balls after the collision is 34th of the original. Find the coefficient of ...
【题目】 一道英文物理题哦 A ball o f mass m is attached to a string o f l ength L .It is swung in a vertical circl e with enough sp eed to keep the string taut throughout th e motion. Assum e the ball travels freely in th e circl e with negligibl e loss o f mec hani...
【题目】A ball of mass 200 g travelling horizontally at 6m s- strikes a verticalwall at right angles and rebounds with a speed of 4ms-. Find themagnitude of the impulse given to the ball.Assuming that contact between the ball and the wall lasts for0. I seconds, find the force (...
题目【题目】A ball of mass m is thrown with initial velocity u and experiences a resist-ance to motion of m |v where v is the velocity at any instant of time t.Fn ifrnilquogvng ntrmovangHence find an expression for T, the time taken to reach maximum height. 相关知识点: ...