Answer: (1) An aircraft taking off
Any object thrown into space with only gravity acting on it is referred to as a projectile. Gravity is the main force acting on a projectile. When a particle is thrown obliquely near the earth’s surface, it follows a curved path of constant acceleration that leads to the earth’s centre. The path of such a particle is called a projectile and the motion is called projectile motion. When an aircraft takes off, it does not take off in a parabolic direction. As a result, it isn’t a projectile motion.