So, speed, which is the scalar quantity is going to be just the magnitude of the vector, V.

因此，速度的大小即是,矢量V的模长。

youdao

V-valve dual-bearing structure, mechanical stability, high starting torque is small, to ensure the valve sensor with excellent sensitivity and speed.

型阀采用双轴承结构，机械稳定性高，启动扭矩小，保证了阀门具有极好的灵敏度和感应速度。

youdao

Unlike the better balanced straight-six or even the ultra-smooth V-12 engine, the humble four-cylinder generates an up and down vibration with a frequency of twice the crankshaft's rotational speed.

不像运行起来比它更稳定的直列六缸引擎或者极其流畅的V - 12引擎，卑微的四缸引擎会以一种比自身机轴转速高两倍的频率产生一上一下的振动。

youdao

If you want to find the speed there, you put the equation v^=v0^-2g.

如果你想求出那一点的速度,可利用方程v^=v0^-2g

耶鲁公开课 - 基础物理课程节选

There's also a 3.5-liter, 270 horsepower V-6 with a transmission that gets upgraded from a five-speed automatic to six speeds.

WSJ: Hot Wheels: Toyota to replace aging Highlander SUV

The EN-V runs on battery power and plugs into a wall -- giving it a max speed of about 30 miles per hour and a range of about 30 miles.

CNN: The future of cars: Drivers not needed

The eight-speed is only available with V-6 engines.

WSJ: Hot Wheels: Cadillac to challenge BMW with CTS