E |
R |
2BL(v1-v2) |
R |
4B2L2(v1-v2) |
R |
4B2L2(v1-v2) |
R |
fR |
4B2L2 |
f2R |
4B2L2 |
2BL(v1-v2) |
R |
f |
2BL |
f2R |
4B2L2 |
f2R |
4B2L2 |
f2R |
4B2L2 |
4B2L2(v1-v2) |
R |
4B2L2(at-vt) |
R |
4B2L2vt+fR |
4B2L2t-mR |
fR |
4B2L2 |
f2R |
4B2L2 |
4B2L2vt+fR |
4B2L2t-mR |
1 |
v1 |
1 |
v2 |
1 |
v3 |
A.
| B.
| ||||
C.
| D.
|
A.加速度相等 | B.速度改变量相等 |
C.重力的平均功率相等 | D.合外力对物体做功相等 |
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