A particle P P\,P is projected with a velocity (16.8i+vj)ms−1(16.8\mathbf{i} + v\mathbf{j})\text{ms}^{-1}(16.8i+vj)ms−1 from a point 20m above the ground.
The speed of the particle after 2 seconds is 21 ms-1. Given that P P\,P is descending after 2 seconds, find the value of vvv.
Find the greatest height of PPP.
Find the horizontal distance travelled by P P\,P before it hits the ground.
230 exam-style questions on Edexcel A Level Maths Projectiles, covering 6.1 Horizontal Projection, 6.2 Horizontal and Vertical Components, 6.3 Projection at Any Angle, and 6.4 Projectile Motion Formulae. Each one has a worked solution and a mark scheme showing where the marks go.