Question

Whenever force acts prependicularly to a moving body then its velocity is?

Answer 1

the answer is 0 since it's perpendicularly moving

Answer 2

Whenever a perpendicular force acts on a body assuming to be moving with constant velocity

Force and displacement are perpendicular so angle between them is 90

Using work energy theorem

W=FScos90

W=0

Since work done =change in KE

No change in KE ==> magnitude of velocity remains same but its direction changes continuously

CONCLUSION: Body performs circular motion where the force applied provides centripetal force