((i))[3]
Calculate the time for $P$ to reach the ground.
(i)[3]
Calculate how long $P$ takes to reach the ground.
(ii)[4]
Calculate the speed of $P$ just before it reaches the ground and the direction of motion.
Mathematics 9709 · AS & A Level · Probability
Probability — practice question
A particle $P$ is projected at a speed of $20\,\text{m s}^{-1}$, making an angle of $60^\circ$ below the horizontal, from a point $O$ that is $30\,\text{m}$ above level ground.