作业帮请各位帮忙解一下这道英文物理题A 9 g bullet is fired into a 257 g block thatis initially at rest at the edge of a frictionlesstable of height 1.8 m. The bullet remains inthe block, and after impact the block lands2.3 m from the bo
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请各位帮忙解一下这道英文物理题A 9 g bullet is fired into a 257 g block thatis initially at rest at the edge of a frictionlesstable of height 1.8 m. The bullet remains inthe block, and after impact the block lands2.3 m from the bo
请各位帮忙解一下这道英文物理题
A 9 g bullet is fired into a 257 g block that
is initially at rest at the edge of a frictionless
table of height 1.8 m. The bullet remains in
the block, and after impact the block lands
2.3 m from the bottom of the table.
Find the initial speed of the bullet. The
acceleration due to gravity is 9.8 m/s
.
Answer in units of m/s
请各位帮忙解一下这道英文物理题A 9 g bullet is fired into a 257 g block thatis initially at rest at the edge of a frictionlesstable of height 1.8 m. The bullet remains inthe block, and after impact the block lands2.3 m from the bo
把一个9g的子弹射入静止在光滑左面边缘的木块中,木块质量为257g,桌子高1.8m.子弹停在木块中和木块一起飞出桌面最后落在离桌子边缘2.3m的地面上.求子弹初速度,g=9.8m/s2.
列方程根据动量守恒定律：mv0=(m+M)V1（m M分别为子弹和木块的质量,v0子弹初速度,V1子弹和木块一起的速度）
根据抛物运动特点：H=1/2gt^2
s=V1t
联立方程解得v0=0.13m/s
你能不能先翻译成中文？尽量
一粒子弹被射入一个质量为257克的物体中，该物体原本静止于一高1.8米的桌子边缘。子弹射中物体后停留于物体内，而物体被撞击至离桌子所在位置2.3米远的地面上。
求子弹的初速度。
设重力施与物体的加速度为9.8m/s^2...
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