JAMB - Physics (1982 - No. 22)
A rocket burns 0.01kg of fuel each second and ejects it as a gas with a velocity of 5,000m/s. What force does the gas exert on the rocket?
500,000N
500N
50N
5,000N
50,000N
解释
F =\(\frac{m(v - u)}{T}\)
= \(\frac{0.01(5000 - 0)}{1}\)
= 50N
= \(\frac{0.01(5000 - 0)}{1}\)
= 50N