JAMB - Physics (1990 - No. 5)
To keep a vehicle moving at a constant speed v, requires power P, from the engine. The force provided by the engine is
\(\frac{p}{v}\)
\(\frac{1}{2}\) v
pv
\(\frac{p}{v^2}\) v
説明
power = speed x force
force = \(\frac{power}{speed}\)
force = \(\frac{power}{speed}\)