Why does the velocity of the ball change when it hits the tree?

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

Ideal meters problem. what internal resistance is ideal for a voltmeter? what internal resistance is ideal for an ammeter?