1.A projectile is launched from ground level to the top of a

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1.A projectile is launched from ground level to the top of a cliff which is 195m away and 155m high.if the projectile lands on top of the cliff 7.6s after it is fired,find the initial velocity of the projectile (magnitude and direction).Neglect air resistance.

一个弹丸发射从地面到顶部的悬崖,距离悬崖195米,悬崖155米高.如果7.6秒发射之后子弹落在悬崖顶上,找到初始速度(大小和方向).忽视空气阻力.

2.Two cars approach a street corner at right angles to each other.car A travels at a speed relative to Earth（这句看不懂.）Va=35km/h and car B at Vb=55km/h.what is the relative velocity of car A as seen by car what is the velocity of carB relative to Car

第二题看不懂就算了.我自己都不知道怎么翻译这个吃屎的题目.

两辆卡车在一个十字路口相遇（两条路垂直）,卡车A和卡车B分别以相对大地为va=35km/h和vb=55km/h的速度行驶,问在卡车B上看,卡车A的相对速度是多少?卡车B相对卡车A的相对速度是多少

1.A projectile is launched from ground level to the top of a from ground level,a ball is thrown upward with an initial ve the old saying "A lie is a jump from the top of a house' range of a projectile 什么意思 a lie is a jump from the top of a house 中文意思 16.___ ___ from the top of the hill,the city is just like a This is a region of very flat ground extending from the Cana We got to the top of a mountain (from where) we can see the To construct a whole house from the ground up is not easy.请问英语翻译top university were overwhelmed by the 24%of A-level app _______in a top-level university abroad is what many student The teacher is known__(have) a high level of English.