2. 2. Many factors have to be taken into account to achieve a successful rocket launch, maintain a stable orbit and return to Earth

3. Galileo's analysis of projectile motion Describe Galileo’s analysis of projectile motion

4. Describe the trajectory of an object undergoing projectile motion within the Earth’s gravitational field in terms of horizontal and vertical components

5. v x = u x + a x t v x 2 = u x 2 + 2a x  x  x = u x t + ½ a x t 2 v x = u x v x 2 = u x 2  x = u x t v y = u y + a y t v y 2 = u y 2 + 2a y  y  y = u y t + ½ a y t 2 solve problems and analyse information to calculate the actual velocity of a projectile from its horizontal and vertical components using: v = u + at v 2 = u 2 + 2as s = ut + ½ at 2 (N.B. change to component versions) Perform a first-hand investigation, gather information and analyse data to calculate initial and final velocity, maximum height reached, range, and time of flight of a projectile, for a range of situations by using simulations, data loggers and computer analysis Projectile motion Experiments Marble launcher Data logger for launch velocity Apple Computer simulation Video analysis Stroboscopic photography

6. 15 m 5 m/s

7. 15 m 5 m/s