Question

If the resultant force is alwa7s perpendicular to motion of a particle then​

Answer 1

ANSWER

If the resultant force is always perpendicular to motion of a particle its speed will be constant so its KE will also be constant. Since Force is perpendicular to the direction of motion, work done also be zero

Answer 2

Answer:

If the force is always perpendicular to motin, then KE remains constant. So work done is zero. In uniform circulart motion, speed is always a constant but velocity changes as direction changes.