(a)[2]
Calculate the change in momentum of the molecule.
(b(i))[3]
Explain the pressure exerted by gases using the kinetic model.
(b(ii))[1]
Explain the effect of an increase in density, at constant temperature, on the pressure of a gas.
Physics 9702 · AS & A Level · Linear momentum and its conservation
Linear momentum and its conservation — practice question
A gas molecule’s mass is $6.64 \times 10^{-27}\,\text{kg}$ and its speed is $1250\,\text{m s}^{-1}$. It strikes a flat surface at right angles and then rebounds at the same speed, as shown in Fig. 4.1.