Question

一輛汽車在行駛中發(fā)生漏油，假如每隔l s漏下一滴，車在平直公路上行駛，一位同學(xué)根據(jù)漏在路面上的油滴分布，分析汽車的運(yùn)動(dòng)情況（已知車的運(yùn)動(dòng)方向）。下列說(shuō)法中正確的是（   ）                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              A．當(dāng)沿運(yùn)動(dòng)方向油滴間距逐漸增大時(shí)，車一定在做減速直線運(yùn)動(dòng)

B．當(dāng)沿運(yùn)動(dòng)方向油滴始終均勻分布時(shí)， 車可能做勻速直線運(yùn)動(dòng)

C．當(dāng)沿運(yùn)動(dòng)方向油滴間距逐漸增大時(shí)，車一定在做勻加速直線運(yùn)動(dòng)

D．當(dāng)沿運(yùn)動(dòng)方向油滴間距逐漸增大時(shí)，車的加速度一定也增大

 

Answer 1

B

解析:略