A train increases its velocity uniformly from 8.0 m/s to 20 m/s in 6.0 s.
Use the equations a=v−ut\displaystyle a=\frac{v-u}{t}a=tv−u and v2−u2=2axv^2-u^2=2axv2−u2=2ax.
What distance does the train travel during this time?
36 m36\ \mathrm{m}36 m
84 m84\ \mathrm{m}84 m
60 m60\ \mathrm{m}60 m
120 m120\ \mathrm{m}120 m
96 exam-style questions on Edexcel GCSE Physics 2.2 Speed, velocity and acceleration, covering 2.2.1 Speed and distance–time graphs, 2.2.2 Acceleration and the uniform-acceleration equation, 2.2.3 Velocity–time graphs, and 2.2.4 Measuring speed, typical speeds and free-fall acceleration. Each one has a worked solution and a mark scheme showing where the marks go.