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...
英文物理题 A ball of mass 0.100 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.840 m. What impulse(with direction) was given to the ball by the floor? 不是要翻译。。要答案 答案 let me try.Since the question is in English,i...
A ball of mass 0.2kg is dropped from a height of 2.5 m above horizontal ground. After hittingthe ground it bounces to a height of 1.8 m above the ground. Find the magnitude of the impulsereceived by the ball from the ground. 相关知识点: 试题来源: 解析 2.59Ns (2 d.p.) 反馈...
11 A ball of mass 400 g rolls down a hill. 2.0 m above the bottom of the hill, the speed of the ball is 3 0 m/s.3.0 m/s2.0m The gravitational field strength g is 10 N/kg. Ignoring the effects of friction and air resistance, what is the kinetic energy of the ball at the...
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 ...
【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...
1一道英文物理题哦A ball of mass m is attached to a string of length L .It is swung in a vertical circle with enough speed to keep thestring taut throughout the motion. Assume the ball travelsfreely in the circle with negligible loss of mechanical energy.Determine if the following six sta...
∫ms The air resistance is in the opposite direction of the velocity and has a magnitude of0.110N. Find the acceleration vector of the ball. NOTE1: Don't forget to draw a free body diagram There are 2 steps to solve this one....
物理问题。。。英文。。4点前最好。。1) A ball of mass M = 0.320kg is connected by a light but rigid rod of length L = 0.770m to a pivot and held in place with the rod being vertical. A wind exerts a constant force F to the right on th
百度试题 结果1 题目6 A bowling ball of mass 7.0 kg is travelling at a speed of 4.0 m s-D The kinetic energy of the ball is口 A 14J B 28J口 C 56J口 D 112 J 相关知识点: 试题来源: 解析 D 反馈 收藏