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匀变速直线运动

> 一个物体从静止开始做匀加速直线运动。它在第一秒内与在第二秒内位移之比为S 1:S 2,在走完前1m时与走完前2m时的速度之比为V 1:V 2。以下正确的是（） A．S1:S2=1:3 V1:V2 =1:2 B．S1:S2=1:4 V1:V2=1:2 C．S1:S2=1:3 V1:V2 =1: D．S1:S2 =1:4 V1:V2 =1:

问题：

发布时间：2024-09-09

一个物体从静止开始做匀加速直线运动。它在第一秒内与在第二秒内位移之比为S ₁:S ₂,在走完前1m时与走完前2m时的速度之比为V ₁:V ₂。以下正确的是（）

A．S₁:S₂=1:3 V₁:V₂ =1:2

B．S₁:S₂=1:4 V₁:V₂=1:2

C．S₁:S₂=1:3 V₁:V₂ =1:

D．S₁:S₂ =1:4 V₁:V₂ =1:

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一个物体从静止开始做匀加速直线运动。它在第一秒内与在第二秒内位移之比为S 1:S 2,在走完前1m时与走完前2m时的速度之比为V 1:V 2。以下正确的是（ ） A．S1:S2=1:3 V1:V2 =1:2 B．S1:S2=1:4 V1:V2=1:2 C．S1:S2=1:3 V1:V2 =1: D．S1:S2 =1:4 V1:V2 =1:

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