sat2 a bicycle wheel spins on its axis at a constant rate but has not yet made a complete rotation .which of the following statements is correct?a.the angular displacement is zerob.the linear displacement is zeroc.the angular acceleraction is zerod.t
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sat2
a bicycle wheel spins on its axis at a constant rate but has not yet made a complete rotation .which of the following statements is correct?
a.the angular displacement is zero
b.the linear displacement is zero
c.the angular acceleraction is zero
d.the angular velocity is zero
e.none of these is zero
其它选项我都明白,但为什么选c?
因为at a constant rate...=angular acceleration is 0!
讨论角的问题跟一般的运动学问题一样,匀速直线运动,a=o
题目说得很清楚了,轮子的角速度不变“at a constant rate”,角速度不变自然也就没有角加速度啊。
sat2 a bicycle wheel spins on its axis at a constant rate but has not yet made a complete rotation .which of the following statements is correct?a.the angular displacement is zerob.the linear displacement is zeroc.the angular acceleraction is zerod.t
wheel was this of bicycle very one small 连成一句话
The tow wheel of this bicycle were very
a wheel of light中wheel的意思
SAT2
Sat2
He can ride a bicycle .对ride a bicycle 提问
take a bicycle trip与have a bicycle trip 能换用吗
wheel-to-wheel的意思句子是:he won the race after a thrilling wheel-to-wheel battle with defending world champion .
Do you have a bicycle
Do you have a bicycle
Mary( )got a new bicycle.
Days out on a bicycle,
days out on a bicycle.
days out on a bicycle.
Ten boys have a bicycle,
I usually go to school_______.A.on bicycle B.by a bicycle C.on my bicycle D.ride a bicycle
a spare wheel 可不可以说成 a wheel of spare part.