Grade 11General Physics
- sir, when we give escape velocity to a projectile, it escapes the earth...so if we give 3 times of velocity to a projectile ,then at infinity its velocity decreases to 2*1.414 times of escape velocity(,when we neglect sun and other planet’s gravitation force...)
so my question is that because we are neglecting other forces then why there is change in velocity because as newton’s 1 law states that until an external force is applied there is no change in motion of body.
- sir, when we give escape velocity to a projectile, it escapes the earth...so if we give 3 times of velocity to a projectile ,then at infinity its velocity decreases to 2*1.414 times of escape velocity(,when we neglect sun and other planet’s gravitation force...)
so my question is that because we are neglecting other forces then why there is change in velocity because as newton’s 1 law states that until an external force is applied there is no change in motion of body.
