A particle is projected vertically upwards with speed 24.5m s-1 .Find the total time for which it is 21m or more above its point of projection 相关知识点: 试题来源: 解析 一个粒子投影垂直向上的速度24.5m S-1.找到它的总时间是2100万以上的点的投影 结果一 题目 大神们我快哭了!帮帮 求求!...
3 A particle P is projected vertically upwards with speed 5ms' from a point A which is 2.8m above horizontal ground.(a) Find the greatest height above the ground reached by P.[3] (b) Find the length of time for which P is at a height of more than 3.6m above the ground.[4] ...
85 mA particle is projected vertically upwards from the top of tower with velocity 10 m/s. It reaches the ground in 5 s. find Average speed & average velocity of particle.
<p>To find the time taken by a particle projected vertically upwards to reach its highest point, we can use the following steps:</p><p>1. <strong>Identify the Initial Velocity (u)</strong>: The particle is projected with an initial velocity of \( u =
Give non-exact numerical answers correct to3significantfigures,or1decimal place in the case of angles in degrees,unless a different level of accuracy is specified in the question.Where a numerical value is necessary,take the acceleration due to gravity to be10m s−2.At the end of ...
At time t = 0, a particle of mass m is projected vertically upwards with speed U.The particle is subject to air resistance of magnitude, where v is the speed of the particle at time t and k is a positive constant.Show that the particle reaches its greatest height, H, above the point...
A particle P of mass 0.7kg is attached to a fixed point O by a light elastic string of natural length0.6m and modulus of elasticity 15N. The particle P is projected vertically downwards from the point A. 0.8 m vertically below O. The initial speed of P is 2ms^{-1}.(i) Find the...
A particle is projected vertically upward in vacum with a speed 40m/s then velocity of particle when it reaches at maximum height 2s before, is (Take g=10m/s) View Solution An object is thrwon vertically upwards with a velocity of 60 m/s. After what time it strike the ground ? Use...
A stone is projected vertically upwards to reac a maximum heiht h. What is the ratio of its kinetic energy to its potential energy at a heigth of 35h? A2:3 B4:5 C3:4 D3:2Submit A particle is projected vertically upwards and reaches the maximum height H in time T. The height of ...
Answer to: A body is projected vertically from the Earth with a velocity equal to half the escape velocity. What is the maximum height attained by...