(i)[4]
Determine the ratio of distances $AB : BC$.
(ii)[3]
The particle is brought to rest at $D$. If $AD$ measures $80\,\text{m}$, calculate $BC$.
Mathematics 9709 · AS & A Level · Kinematics of motion in a straight line
Kinematics of motion in a straight line — practice question
A particle $P$ travels along the straight line $ABCD$ with constant deceleration. Its velocities at $A$, $B$ and $C$ are $20\,\text{m s}^{-1}$, $12\,\text{m s}^{-1}$ and $6\,\text{m s}^{-1}$ respectively.