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](/uploads/image/z/6945679-55-9.jpg?t=%E8%AF%B7%E5%90%84%E4%BD%8D%E5%B8%AE%E5%BF%99%E8%A7%A3%E4%B8%80%E4%B8%8B%E8%BF%99%E9%81%93%E8%8B%B1%E6%96%87%E7%89%A9%E7%90%86%E9%A2%98A+9+g+bullet+is+%26%2364257%3Bred+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%2C+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 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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