A particle P P\,P is projected with a velocity (2i+10j)ms−1(2\mathbf{i} + 10\mathbf{j})\text{ms}^{-1}(2i+10j)ms−1 from a point 40m above the ground.
Find the speed of the particle after 3 seconds.
Find the greatest height of PPP.
Find the horizontal distance travelled by P P\,P before it hits the ground.