It is easier to start a car engine on a warm day than on a chilly day. Why?

Why is it easier to start a car engine on a warm day than on a chilly day ?

(A): It is easier to start a car engine on a warm day than a chilly day (R): with increase in temperature, the internal resistance of the car battery decreases

It is easier to start a car engine on a hot day than on a cold day. This is because the internal resistance of the car battery

Why is it easier to charge a ballon on a dry day than on a humid day ?

Sound travels faster on a rainy day than on a dry day. Why?

It is easier to maintain the motion of a body than to start it. Why?

Give reason : Sound travels faster on a rainy day than on a dry day.