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If west means the west of the axis x the velocity equal :
M = 45.0 g in Kg 0.045 Kg
speed = 75.0 m/sec
Δp = m * speed
Δp = 0.045* 75.0
Δp = 3.375 kg.m/s
hope this helps!
The current flowing in the circuit can be found by applying Ohm's law:
where
V is the voltage of the battery
I is the current flowing in the circuit
R is the resistance of the circuit
In our problem, V=12 V and
, so if we re-arrange the previous equation and we use these data, we find the current in the circuit:
Therefore the correct answer is C).