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As often described, a vector is a quantity that has a magnitude and a direction, whereas a scalar just has a magnitude. The easiest way to thing about it is to physically think if you could point in a dir...
Acceleration is a change in velocity over time. Velocity is different to speed, because it has a direction (for example a car moving at 10 mph along a road heading north will have a greater ve...
a) Calculate the magnitude of the total momentum of the trucks.
The momentum (p) is the mass (m) of an object multiplied by its velocity (v).
p = m x v
A Frequency of 440Hz means that the wave is oscillating 440 times in one second. Ie. 440 waves are produced every second
A cell is a single unit of a power supply which uses chemical energy to produce energy. A battery is a group of cells joined in series.
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