When a ball is thrown in the air, which of the following describes the upwards motion to the point of greatest height:A.Kinetic energy is converted entirely to potential energyB.Potential energy is converted entirely to kinetic energyC.Kinetic energy is converted partly to potential energyD....
英语翻译If a ball is thrown in the air with a velocity 48 ft/s,its height in feet t seconds later is given by y = 48t − 16t2.(a) Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second. 答案 回答:如果将一个球以48英尺/秒的速度扔向空中,则...
解析 Solution:Let h be 50m-4.9t²+38t+1.75=504.9t²-38t+48.25=0t₁= 1.60st₂= 6.16sTime duration Δt = 6.16-1.60 = 4.56 (s)Ans:The length of time is 4.56 seconds.结果一 题目 Quadratic Functions Word Problem数学,函数,方程 A ball is thrown up into the air. Its height h,...
A ball is thrown in the air. Its height, h m, at any time t seconds is given by: h = 5t (4 - t) What is the maximum height reached by the ball? Critical Points: A critical point for a function would correspond ...
Answer to: A ball is tossed in the air. Its height is modelled by h=-S(t-4)^{2}+82. What velocity will the ball be travelling when it hits the...
the condition of being tall or extending upward a great distance other ball players who have more height He was surprised by her height. an extent of land rising to a considerable degree above the surrounding country a point or position that is advanced or extreme or that extends upward a gr...
英语翻译If a ball is thrown in the air with a velocity 48 ft/s,its height in feet t seconds later is given by y = 48t − 16t2.(a) Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second.
A ball is thrown straight up into the air and ,after being in the air for 9 seconds,is caught by a person 5 meters above the ground.To what maxium height did the ball go 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 用动力学公式计算:设单程(上位移)为 X 米,已知...
1. A tennis ball is thrown vertically downwards from a height of 0.65 m above the ground. It leaves the hand with an initial speed of 1.5 m s1. The ball rebounds and is caught when it is travelling upwards with a speed of 1.0 m s-1.Assume that air resistance is negligible.(a) Ca...
2. A tennis ball is thrown vertically downwards from a height of 0.65 m above the ground. It leaves the hand with an initial speed of 1.5 m s1. The ball rebounds and is caught when it is travelling upwards with a speed of 1.0 m s-1.Assume that air resistance is negligible.(a) ...