Use g=9.8g = 9.8g=9.8 m s−2^{-2}−2.
A particle P P\,P is projected with velocity (3i+4j)(3\mathbf{i} + 4\mathbf{j})(3i+4j) m s−1^{-1}−1 from a point 20 m above horizontal ground, where i\mathbf{i}i is horizontal and j\mathbf{j}j is vertically upwards.
Air resistance is modelled as negligible.
Find the speed of P P\,P after 2 seconds.
Find the greatest height of P P\,P above the ground.
163 exam-style questions on WJEC A Level Maths 4.8 Kinematics (A-level only), covering 4.8.1 Kinematics (A-level only), 4.8.2 Kinematics (A-level only), and 4.8.3 Kinematics (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.