Need delay for powerup

Questions & Answers
1

I have seen multiple questions like this, either with no replies or one that does not help me. I need something that will delay here. The idea is in collision the speed rises and after so many seconds it goes back down. I need a delay for this time.

void OnTriggerEnter(Collider other) 
		{
			if(other.gameObject.tag == "SpeedUp")
			{
				maxSpeed = 15;
				Destroy (other.gameObject);
				*here*
				maxSpeed= 10;
			}
2

at “here” type Invoke(“returnToNormalSpeed”, 2.0f);

then add the function

void returnToNormalSpeed(){maxSpeed=10.0f;}