Consider a model rocket of mass m = 0.20 kg which is launched from the surface of the Earth at an angle of 10° to the ve
Posted: Thu Jun 09, 2022 3:14 pm
Consider a model rocket of mass m = 0.20 kg which is launched from the surface of the Earth at an angle of 10° to the vertical. You may assume that the rocket does not rotate, that its mass is constant, and that air resistance is negligible. (a) The rocket's engine provides an impulse of Ap = 15 N s. The engine burns for 2.8 s, providing a constant force. (i) Show that N s is equivalent to kg m s-¹ (the SI unit of momentum). (ii) Draw a force diagram showing the forces acting on the centre of mass of the rocket immediately after the rocket leaves the ground. (iii) Calculate the horizontal and vertical components of the rocket's acceleration while the engine is burning.