A.v0 = 2m/s,a =﹣4m/s2 | B.v0 =" 4m/s" ,a =﹣2m/s2 |
C.v0 =" 4m/s" ,a = 4m/s2 | D.v0 =" 4m/s" ,a =﹣4m/s2 |
A.物体速度变化量是4m/s | B.每经过一秒物体的速度都增大4m/s |
C.任意一秒内的末速度均为初速度的4倍 | D.任意时刻的瞬时速度是4m/s |
A.12.5 m | B.12 m | C.90 m | D.126 m |
A.2m | B.4m | C.16m | D.8m |
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