Explain how you know the car is accelerating when it reaches a curve on the road

When car reaches to the end of the curve then due to change in the direction of the motion the car its velocity is changing and hence the motion of the car is accelerated motion.

Explanation:

As we know that the acceleration of the car is defined as rate of change in velocity

here we know that velocity is a vector quantity and the change in velocity is defined in two ways

1) change in magnitude

2) change in direction

So here when car enters the curved path then due to change in the direction of the motion of the car its velocity will change and hence we can say that its motion is accelerated motion

heats surface water up