1. The problem statement, all variables and given/known data A 'hammer' thrown in athletics consists of a metal sphere, mass 7.26 kg, with a wire handle attached, the mass of which can be neglected. In a certain attempt it is thrown with an initial velocity which makes an angle of 45 degrees with the horizontal and its flight takes 4 seconds. Find the horizontal distance travelled and the kinetic energy of the sphere just before it strikes the ground, stating any assumptions and approximations you make in order to do so. Answers: 80 m, 2900 J 2. The attempt at a solution s = 1/2 at2 = 1/2 * 10 ms-2 * 42 = 80 m KE = 1/2 mv2 = 1/2 * 7.26 * ? v = u +at = 0 + 10 ms-2 * 4 = 40 ms-1 v2 = u2 +2as = 0 + 2 * 10 ms-2 * 80 m = 402 m KE = 5808 J, wrong. Any tips please? Also can't think of a way to use the given angle.