Since everything in the circuit is in series .. .
-- The total resistance is (3 + 2) = 5 ohms.
-- The voltage across the 3-ohm resistor is 3/5 of the total voltage.
-- The voltage across the 2-ohm resistor is 2/5 of the total voltage.
(2/5) of (9 volts) = 18/5 = 3.6 volts .
This is a conservation of momentum problem! Here's how to do it:
Unlike acceleration and velocity, speed does not need to specify the direction of motion. Speed is a scalar quality.
No. The correct answer is A.