Question

Find time when velocity and acceleration are perpendicular

Answer 1

change both magnitude and directtion of the velocity. If theacceleration is in the direction ofvelocity, the acceleration will change the magnitude the ofvelocity(change speed). However, if the acceleration is alwaysperpendicular to the velocity, thevelocity will change direction without change it's magnitude.

Answer 2

i think u r wrong as Acceleration always occurs in the direction of velocity.
but here what time elaborate what u want to ask.
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