How to change the speed and the direction of a moving body
Answers
Explanation:
By applying a force to it, for a sufficient length of time, that is not in line with the initial velocity.
The force has to act for a period of time so that the new velocity is in a different (desired?) direction since, once the force is removed the new velocity will go back to becoming constant in speed and direction in the new direction.
Note that if you do NOT want the speed to change, as well as the direction, the applied force has to be at right angles to the initial and also to the changing velocity.
If the force is left in place, and always at right angles to the instantaneous velocity, you will get a circular motion.
Answer:
By applying an external force to the moving body. Further, for the desired speed and direction, the respective force is to be applied.