How can I change the other objects velocity when using OnTriggerEnter2D?

 rb.angularVelocity = Vector3.zero;
 rb.velocity = Vector3.zero;
 float time = Time.time + 1; 

where rb is your Rigidbody. of course to set the delay you have to create a float that takes in the current time and add to it, then do a check for Time.time > time to stop.

 void OnTriggerEnter2D(Collider2D other) {
     StartCoroutine(StopAfterDelay(1, other.gameObject.GetComponent<Rigidbody2D>()));
 }
 
 IEnumerator StopAfterDelay(float delay, Rigidbody2D body) {
     yield return new WaitForSeconds(delay);
     body.velocity = Vector2.zero;
 }

Wrote it on my phone so sorry if there's spelling errors. Should give you an idea anyways.